Anatomic and Clinical Laboratory Associates is notifying almost 170,000 patients about a recent cybersecurity incident. Data breaches have also been announced by ZenPatient, Saint Pete MRI, Carlyle Senior Care, SportsMed Physical Therapy, and Lifeways Inc.

Anatomic and Clinical Laboratory Associates

Anatomic and Clinical Laboratory Associates, P.C., a Nashville, TN-based physician-owned pathology group, has announced a significant data breach involving the protected health information of 169,626 current and former patients.

An investigation was launched on December 1, 2025, when anomalous activity was identified within its computer network. Third-party cybersecurity experts were engaged to assist with the investigation and ensure the security of its computer systems. During the course of the investigation, unauthorized network access was confirmed. It is unclear from the breach notice when the unauthorized access occurred or for how long its network was compromised.

The review of the exposed data was completed on April 27, 2026, when it was confirmed that personal and protected health information had been exposed. The affected individuals had their names exposed, along with one or more of the following data elements: date of birth, Social Security number, taxpayer identification number, date(s) of service, medical provider name(s), mental/physical condition, medical treatment/procedure information, diagnosis or clinical information, medical history, patient account number, and/or medical record number.

Notification letters were mailed to the affected individuals on June 23, 2026, and complimentary credit monitoring and identity theft protection services have been offered to certain individuals, dictated by the types of information involved. Anatomic and Clinical Laboratory Associates have implemented additional security measures to prevent similar incidents in the future.

ZenPatient

ZenPatient, Inc., a Santa Monica, CA-based provider of telehealth and messaging software platform, has announced a cybersecurity incident that involved unauthorized access to its network between December 2025 and February 2026. Suspicious activity was identified within its computer network on February 27, 2026. Assisted by third-party cybersecurity professionals, the incident was investigated, and it was confirmed that an unauthorized third party had access to its network between December 5, 2025, and February 12, 2026, during which time certain files were exfiltrated from its network.

The compromised files were reviewed and found to contain names, addresses, birth dates, and medical information. Notification letters were sent to the affected individuals on July 17, 2026. ZenPatient said it is unaware of any misuse of patient data as a result of the incident; however, as a precaution against data misuse, complimentary credit monitoring services have been made available to the affected individuals for 12 months. Additional cybersecurity measures have been implemented to reduce the risk of similar incidents in the future. The data breach has been reported to regulators, but the number of affected individuals has yet to be publicly disclosed.

Saint Pete MRI

Saint Pete MRI, a St. Petersburg, FL-based full-service diagnostic imaging and sleep lab, is notifying certain patients about a cybersecurity incident it identified on or around February 23, 2025. Immediate action was taken to investigate the incident and secure its computer systems, and a third-party cybersecurity firm was engaged to assist with those processes.

The investigation confirmed that electronic patient care and imaging systems were not subject to unauthorized access; however, the unauthorized party behind the incident may have acquired certain scanned data. The affected files were reviewed, and on April 7, 2026, Saint Pete MRI confirmed that they contained names, dates of birth, Social Security numbers, driver’s license numbers or state identification numbers, medical information, and/or health insurance information.

Notification letters were mailed to the affected individuals on July 22, 2026, around 17 months after the incident was first identified. The incident is not currently shown on the HHS’ Office for Civil Rights data breach portal, so it is unclear how many individuals have been affected.

Carlyle Senior Care Management Company

Carlyle Senior Care Management Company, a South Carolina-based management company for Carlyle Senior Care independent living, senior living, and skilled nursing care facilities in the state, has reported a data breach to the HHS’ Office for Civil Rights involving the protected health information of 4,060 individuals.

There is currently no substitute data breach notice on the Carlyle Senior Care website, and no press release appears to have been issued, so it is unclear what data types were involved. This appears to have been a ransomware attack conducted by the Insomnia ransomware group, which claimed on its data leak site to have stolen data from Carlyle Senior Care of Florence. Insomnia claimed to have notified Carlyle Senior Care about the breach on October 31, 2025, then proceeded to leak the stolen data. Insomnia claimed to have stolen patient records, internal documents, and sensitive information.

SportsMed Physical Therapy

SportsMed Physical Therapy, a physical therapy clinic with locations in New Jersey and Connecticut, has identified unauthorized access to a single email account. The breach was identified on May 8, 2026, and the account was secured. An investigation was launched to determine the individuals affected and the types of data involved.

The review has recently been completed and confirmed that names had been compromised in combination with one or more of the following: date of service, provider name, diagnosis information, treatment information, and/or health insurance information. SportsMed Physical Therapy said it is unaware of any misuse of patient information as a result of the incident. The incident is not currently shown on the HHS’ Office for Civil Rights website, so it is currently unclear how many individuals have been affected.

Lifeways

Lifeways Inc., a nonprofit provider of mental health counseling and addiction services to patients in Idaho and Oregon, identified unauthorized access to an employee’s email account. The email account breach was identified on January 21, 2026, and after securing the account, an investigation was launched to determine the nature and scope of the unauthorized activity. The investigation revealed several employee email accounts had been compromised.

The incident was limited to its email environment. On May 8, 2026, Lifeways confirmed that the exposed information included names, birth dates, Social Security numbers, driver’s license/state identification numbers, financial account numbers, patient account numbers, medical record numbers, diagnoses, treatment and procedure information, prescription information, treatment locations, provider names, Medicare and Medicaid numbers, clinical information, and health insurance information. At the time of issuing notification letters, Lifeways was unaware of any misuse of the exposed information. The Oregon Attorney General was informed that 343 individuals have been affected.

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There has been a general trend of increasing data breaches over the past decade, with this year on track to set a new record. According to the H1 2026 Data Breach Report from the Identity Theft Resource Center (ITRC), there have been at least 1,803 data compromises in H1 2026, which will give an annual total of more than 3,600 data compromises if they continue to occur at a similar rate as the first half of the year.

Across those data compromises, there have been 1,394 confirmed data breaches (excluding leaks, exposures, and unknown incidents), accounting for 77% of total events. More than 471 million victim notices have been issued, which already exceeds the total number of victim notices for all of 2025, and there are still six months of the year to go. While at the current rate, this year is unlikely to beat the total for 2024, even with only 6 months of data, 2026 already ranks as one of the worst years to date.

As ITRC explains in the report, part of the reason is the return of mega data breaches, the biggest of which involved the Instructure Holdings’ Canvas platform, which accounted for an estimated 275 million of those notices. A mega data breach at Under Armour involved more than 72.7 million notices, while the SoundCloud data breach saw 29.8 million victim notices issued.

There were no healthcare data breaches in the top 10 data compromise list, in contrast to H1, 2025, when three healthcare data breaches made it into the top 5. In fact, based on breach reporting to the HHS’ Office for Civil Rights, there have been relatively few mega data breaches in healthcare. In H1 2026, only 7 healthcare data breaches required more than 1 million notices.

While very large data breaches may have been reported in lower numbers in the first half of the year, healthcare data breaches continue to be reported in volume. The ITRC tracking data show 281 healthcare data compromises in the first half of the year, which puts the industry in second spot behind financial services with 387 compromises. The data for 2025 show a slight year-over-year fall in financial services data breaches, from 396 in H1, 2025, and a slight increase in healthcare data breaches, rising from 270 in H1, 2025. Across the 281 healthcare data breaches, more than 11.7 million patients have been affected. Current OCR data (from July 23, 2026) show that number has already more than doubled to over 28.8 million victims, although the total is still well below last year’s H1, 2026 count of 42.8 million healthcare victims.

As ITRC has reported for several years, the trend of withholding important information from breach notices has continued. ITRC reports that 76% of all notices failed to include information about the attack vector (1,378 notices). Only 24% of notices contained information about the attack vector – the lowest ever rate since ITRC has been producing its data breach reports. “This opacity prevents consumers, businesses and policymakers from understanding their true risk exposure or taking meaningful preventive action,” explained ITRC. To put that total into perspective, 93% of victim notices included information about the attack vector in 2021.

The ITRC data show a significant increase in insider wrongdoing incidents, with 21 such incidents identified in H1, 2026, compared to just 3 in all of 2025 – a sevenfold increase.  ITRC tracked 14 zero-day attacks in H1 2026, which is close to the total of 17 for all of 2025. While there were only 38 tracked supply chain incidents in H1 2026, they required more than 280.6 million victim notices. “Supply chain cyberattacks alone accounted for 199 of 206 affected entities and 280.6 million of 280.6 million combined victim notices,” explained ITRC in the report.

Cyberattacks accounted for 69.7% of data breaches in H1, 2026, and 92.3% of all victim notices. System and human error accounted for 6.9% of breaches and 0.9% of victim notices. By far the main cause of cyberattacks was phishing/smishing/BEC, with 157 incidents, followed by system & human error (125 incidents), and ransomware attacks (76 incidents), although 402 events remain unclassified due to the lack of transparency about breach causes.  Total cyberattacks are down 7.8% compared to H1, 2025, with ransomware attacks up by 4.1%.

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Data breaches have been announced by NAS Recovery Solutions, Entyre Care Massachusetts, Carle Health, and Brown Health Medical Group-MA.

NAS Recovery Solutions

NAS Recovery Solutions, a Lakewood, Colorado-based substance use disorder treatment and behavioral health services provider, has announced a data breach affecting up to 7,000 current and former clients. According to the company’s breach notice, this was an insider breach rather than a hacking incident. The company learned on May 13, 2026, that certain workforce members had downloaded client data without authorization.

The investigation revealed only limited information had been copied, such as first and last names, dates of birth, and telephone numbers; however, since NAS Recovery Solutions is a substance use disorder (SUD) treatment provider, it could be inferred that the individuals were receiving SUD treatment. There are no indications that any other information was obtained by the workforce members. The breach notice does not provide any clue as to why that information was obtained.

NAS Recovery Solutions said it has reviewed workforce access and security controls and is implementing additional safeguards to prevent similar incidents in the future. Additional training has been provided to the workforce on HIPAA and patient privacy, and appropriate corrective action has been taken against the workforce members involved. The sanctions imposed were not disclosed in the notice.

Entyre Care Massachusetts

Entyre Care Massachusetts Inc., a Boston, MA-based home healthcare company, has discovered that an employee accidentally published files containing personal information in a publicly accessible online repository on March 2, 2026. The exposed files were identified on March 12, 2026, and were immediately secured.

The investigation uncovered no evidence to suggest that the files had been accessed or downloaded; however, it was not possible to rule out unauthorized access during the period of exposure. The files only contained limited information, such as names, ages, and Medicaid IDs; however, out of an abundance of caution, the affected individuals have been offered 24 months of complementary credit monitoring and identity theft protection services.

Carle Health

Carle Health, an Illinois nonprofit health system, has confirmed that 1,444 of its patients were affected by a data breach at its vendor Xsolis in January 2026. Xsolis is a vendor that provides an AI-powered software platform to healthcare providers to improve case and utilization management. We have covered the data breach, which affected more than 1.4 million individuals, in this post. Carle Health said the compromised information included names, birth dates, diagnoses, treatment dates and locations, medical record numbers, doctors’ names, Social Security numbers, and health insurance information.

Brown Health Medical Group-MA (Lifespan Physicians Group of Massachusetts)

Lifespan Physicians Group of Massachusetts Inc., which does business as Brown Health Medical Group-MA, has recently announced that the sensitive data of certain patients has been exposed. According to the notification to the Vermont Attorney General, the impacted data includes names, Social Security numbers, government identification numbers, financial account codes, and health records. The incident affected 86 Vermont residents, but it is currently unclear how many individuals have been affected in total.

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The cardiovascular medical practice, Heart Care Centers of Illinois (HCCI), announced on July 18, 2026, that certain patients had some of their personal and protected health information exposed in a phishing attack.

HCCI said it launched an investigation into an unsuccessful phishing attempt and discovered a historical suspicious activity within an employee’s email account on January 15, 2026. Third-party digital forensics experts were engaged to investigate the activity and confirmed that an unauthorized third party gained access to the account between August 22, 2024, and November 6, 2024.

A data analytics firm was engaged to review the account. On June 11, 2026, the review was completed, confirming that the following types of information were present in the account: names, addresses, telephone/fax numbers, Social Security numbers, dates of birth, driver’s license numbers/state identification numbers, payment card information, financial account numbers, passport numbers, diagnosis/condition information, prescription information, treatment information, health insurance information, and provider information.

The affected individuals were notified on July 10, 2026, and complimentary credit monitoring and identity restoration services have been offered. HCCI has reviewed its existing policies and procedures and has taken steps to reduce the risk of similar incidents in the future. The incident is not yet shown on the HHS’ Office for Civil Rights breach portal, so it is unclear how many individuals have been affected.

Madera Community Hospital

Madera Community Hospital in California has notified the California Attorney General about a security incident involving unauthorized access to its network between May 28 and May 29, 2025. The unauthorized access was identified on May 29, 2025, and action was immediately taken to secure its network and prevent further unauthorized access.

Third-party cybersecurity experts were engaged to investigate the incident. No evidence was found to indicate any removal of data; however, the hospital said, “based on subsequent developments, we have reason to believe that a third party acquired files from a portion of its network.” No further information was provided on what that evidence was. The hospital did state that it has not found definitive proof that any data was removed, and none of the impacted data appears to have been published or otherwise shared.

The data review was completed in April 2026, contact information was verified, and notification letters have now been mailed to the affected individuals. Data exposed in the incident includes names, birthdates, contact information, login credentials, government identification numbers (such as Social Security numbers), financial account information, and limited medical information and limited biometric information. The affected individuals have been offered complementary credit monitoring and identity theft protection services. The incident is not yet shown on the HHS’ Office for Civil Rights breach portal, so it is currently unclear how many individuals have potentially been affected.

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Security incidents have resulted in the exposure of patient data at United Technology Systems, Meridian Health Plan of Illinois, and Little Flower Children and Family Services.

Unlimited Technology Systems

Unlimited Technology Systems LLC (UTS), a Montgomery, Ohio-based revenue cycle management company and practice management software provider, has identified unauthorized activity within a commercial data center that contained the personal and protected health information of patients of its healthcare provider clients.

According to its data breach notification letter, unauthorized activity was identified on October 19, 2025. Assisted by a third-party cybersecurity and digital forensics company, UTS determined that an unauthorized third party may have obtained a copy of files from that environment between October 5 and October 10, 2025.

The data review has recently been completed, and UTS has confirmed that the following types of information may have been involved: name, address, email address, phone number, date of birth, health insurance information, patient balance information, Social Security number, medical information including diagnosis, and scanned documents such as driver’s license or other government ID documents. UTS said full medical records, medical images, and financial information were not involved.

As a precaution against data misuse, the affected individuals have been offered complementary credit monitoring services for 24 months, and UTS has implemented enhanced security measures to prevent similar incidents in the future.  The incident is not yet shown on the HHS’ Office for Civil Rights breach portal, so it is unclear how many individuals have been affected.

Meridian Health Plan of Illinois

Meridian Health Plan of Illinois, a government-sponsored managed care service provider, has announced a data breach affecting 21,027 individuals. The incident was detected on April 28, 2026, when unauthorized access to the Meridian provider portal was identified. The provider portal is used by healthcare providers to manage patient information and process claims.

The unauthorized access was blocked, and an investigation was launched to determine the nature and scope of the breach. Meridian Health Plan has confirmed that personally identifiable information such as member names, contact information, and dates of birth had been exposed, along with protected health information such as Member ID numbers, health plan names, eligibility and claims information, and provider information. At the time of issuing notification letters, no misuse of the exposed information had been identified. Credit monitoring and identity theft protection services do not appear to have been made available.

Little Flower Children and Family Services

Little Flower Children and Family Services, a New York-based provider of support services to individuals with developmental disabilities and their families, has recently issued notification letters to individuals informing them that some of their information was exposed in a recent security incident.

Unusual network activity was identified on March 20, 2026, and the forensic investigation confirmed unauthorized access to its network between March 12, 2026, and March 20, 2026. While the review of the affected data is ongoing to determine the specific information exposed, Little Flower Children and Family Services said the types of data likely compromised in the incident include the following:

Name, address, phone number, email address, date of birth, Social Security number, driver’s license number, state ID number, taxpayer ID number, passport number, financial account information, payment card information, digital signature, biometric data, diagnosis and treatment information, prescription information, Medicare/Medicaid number, health insurance information, and treatment cost information. The affected individuals are being offered complementary credit monitoring and identity theft protection services, and steps have been taken to improve security to prevent similar incidents in the future.

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Data breaches have been announced by TriWest Healthcare Alliance, Texas Medicaid and Healthcare Partnership, the Minnesota Health Insurance Network, and Secure Health Plans of Georgia.

TriWest Healthcare Alliance

TriWest Healthcare Alliance, a contractor that manages care for active duty, retired, and National Guard and Reserve military personnel and their family members under the United States Department of Veterans Affairs VAPCCC program, has shared information on a data breach reported to the HHS’ Office for Civil Rights on May 21, 2026. According to the OCR breach report, the protected health information of 11,848 individuals was potentially compromised in the incident.

The security incident was first identified on April 16, 2026. The forensic investigation confirmed that an unauthorized third party gained limited access to parts of its network and downloaded files containing protected health information. Data compromised in the incident includes names, Department of Defense Benefits Numbers, beneficiaries’ ZIP codes, and health-related information. Only 5 individuals had their addresses, dates of birth, and Social Security numbers stolen.

At the time of issuing notification letters, some of which were sent on July 2, 2026, no misuse of the impacted information had been identified; however, as a precaution against data misuse, the affected individuals have been offered complimentary credit monitoring services for 24 months. Security controls have been enhanced, system monitoring tools have been strengthened, and additional security awareness training has been provided to its workforce.

Texas Medicaid and Healthcare Partnership

Texas Medicaid and Healthcare Partnership (TMHP), a state Medicaid contractor, has recently reported a data breach to the HHS’ Office for Civil Rights involving the protected health information of 2,045 individuals.  According to the TMHP substitute data breach notice, this was a fraud-related incident that involved unauthorized access to certain internal systems between February 5, 2026, and March 26, 2026.

When the unauthorized access was detected, immediate action was taken to contain the incident and secure its network, and additional security measures have been implemented to harden security. The forensic investigation determined on April 20, 2026, that personal and protected health information of 1,828 Medicaid clients and 217 healthcare providers had been exposed.

For Medicaid clients, the data compromised in the incident included full names, addresses, dates of birth, Social Security numbers, Medicaid numbers, Medicaid benefits information, Medicaid card information, and health information. Healthcare provider information included full names, addresses, emails, medical license information, financial information, driver’s license numbers, Social Security numbers, tax identification numbers, and other provider enrollment management system information.

Notification letters were mailed to the affected individuals on June 18, 2026, who have been offered complimentary identity theft protection and identity recovery services. TMHP said that at the time of issuing notifications, no information had been found to indicate any actual or attempted misuse of the impacted information.

Minnesota Health Insurance Network

Minnesota Health Insurance Network, a Burnsville, MN-based health insurance brokerage, has started notifying individuals about a recent security incident that exposed personal and protected health information. The security incident was identified on March 17, 2026, and its forensic investigation determined that there had been unauthorized access to parts of its network between March 16 and March 17, 2026, during which time files were exfiltrated from its network.

The affected data has been reviewed and found to include names, dates of birth, Social Security numbers, driver’s license/state ID numbers, other government-issued ID numbers, financial account numbers, credit/debit card information, diagnosis and treatment information, and health insurance information. Individuals whose Social Security numbers were involved have been offered complimentary credit monitoring services. While regulators have been notified, the incident is not currently listed on the HHS’ Office for Civil Rights website, so it is unclear how many individuals have been affected.

Secure Health Plans of Georgia

Secure Health Plans of Georgia (Secure Health), a provider of administrative services, care management, and healthy lifestyle programs to employers with self-funded health benefit plans, is reviewing files that were exposed in a recent cybersecurity incident. The incident was identified on February 12, 2026, and the forensic investigation confirmed unauthorized access to its systems on or before February 3, 2026, until February 12, 2026. During that time, files containing individuals’ protected health information may have been viewed or copied. Secure Health has not yet confirmed the exact types of information exposed in the incident, although protected health information was exposed.

The incident has been reported to the HHS’ Office for Civil Rights using a placeholder estimate of at least 501 individuals. The total will be updated when the data review is concluded, and notification letters will be mailed stating the types of data involved. Secure Health has taken steps to strengthen security to prevent similar incidents in the future.

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Clover Health Investments has notified the U.S. Securities and Exchange Commission (SEC) about a cybersecurity incident first identified on July 4, 2026. Clover Health Investments is a publicly traded health insurer that provides Medicare Advantage plans, directly contracts with the U.S. government, and manages care for Medicare beneficiaries in 11 states. The company also provides technology and software tools to physicians.

Unusual login activity was identified, and its forensic investigation confirmed that a hacker had accessed three employee email accounts after the employees had been tricked by social engineering into disclosing their credentials. Clover Health activated its incident response plan to contain the incident and believes that unauthorized access has been terminated.

Clover Health said the compromised accounts belonged to non-managerial health plan employees who were responsible for handling member visit scheduling and broker-facing sales work. The accounts did not have permissions to access corporate financial or claims systems, but they could access some personal and protected health information.

The volume of exposed data has yet to be determined, and Clover Health has not publicly confirmed whether sensitive data was exfiltrated from its systems. Clover Health has reported the incident to law enforcement and is working with third-party cybersecurity experts to investigate the incident and review the information that was exposed, viewed, or exfiltrated.

Clover Health said it does not believe that the incident has had a material impact on business operations, its financial condition, or results of operations. Notifications will be mailed to the affected individuals if it is determined that HIPAA-protected data has been exposed or stolen, and Clover Health has confirmed that steps are being taken to strengthen security to prevent similar incidents in the future.

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The healthcare technology company Craneware is investigating a cybersecurity incident and has confirmed that a significant amount of data was stolen in the attack, including some employee and customer data.

Craneware is a UK company that heavily targets U.S. healthcare companies. The company makes healthcare accounting and billing software, and partners with 2,000  hospitals and health systems, and around 10,000 pharmacies and clinics, many of which are located in the United States. According to the Craneware website, its software and Trisus cloud platform underpin around 165 million unique patient encounters and impact half a trillion healthcare dollars.

Craneware reports that the company quickly implemented its incident response plan and contained the incident, without any disruption to customer services or the company’s operations. The external investigators assisting with the response have not found any further signs of compromise, which indicates that the hackers have been ejected from its network.

While the review of the impacted data is still in the early stages, the company has confirmed that “a significant volume of file names were viewed and exfiltrated” by the hackers before they were ejected from its systems. “A percentage of Craneware employee data as well as a subset of customer and partner records have been accessed and exfiltrated,” explained the company in its cybersecurity incident notice. “The current assessment is that a large element of the data involved is non-sensitive or already public regulatory data.” The company has yet to confirm if any patient data was compromised in the incident.

The cyberattack has been reported to the UK’s data watchdog, the Information Commissioner’s Office (ICO), and the U.S. Federal Bureau of Investigation (FBI). The company has not yet disclosed the threat actor or group behind the attack, when access to its environment was gained, when the attack was discovered, or the names of affected customers.

“The company is continuing to assess the precise nature and scope of all the data involved and is working with its advisers to identify affected parties and prepare appropriate notifications, including any required further notifications to relevant authorities, in each case in accordance with applicable regulatory obligations,” explained the company.

There has been a spate of recent cyberattacks on healthcare vendors including software providers and medical device companies. Vendors often work with large numbers of healthcare clients and store or have access to large volumes of sensitive patient data, so they are attractive targets for hackers. It is currently unclear whether this was a data theft and extortion incident and if a ransom demand has been issued. No hacking group appears to have claimed responsibility for the attack.

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The healthcare giant Abbott is investigating claims from two threat groups who allege cyberattacks and data theft, one involving legacy Exact Sciences systems of its cancer diagnostics business, and another involving its LabCentral portal.

Abbott acquired Exact Sciences in late 2025, a company specializing in cancer screening and precision oncology diagnostics. The acquisition allowed the company to enter the fast-growing cancer diagnostics market. Abbott has yet to confirm the extent to which patient data has been compromised but has confirmed unauthorized access to certain legacy cancer diagnostics systems. The intrusion did not impact any other Abbott businesses, and had no impact on its business operations, products, product availability, manufacturing/lab operations, or its ability to serve patients. The impacted Exact Sciences systems are separate from Abbott’s systems. In a July 16, 2026, announcement, Abbott said it does not anticipate the incident having any material impact on the business or its financial results.

The ShinyHunters data theft and extortion group claimed responsibility for the attack and threatened to publish the stolen data if payment was not made. Abbott negotiated with the group, and the publication deadline was extended to July 21, 2026. It is currently unclear if payment has been made, and as of July 20, 2026, the stolen data has not been leaked.

ShinyHunters often compromises victims’ systems through voice phishing (vishing) and appears to have used those tactics in this attack. Bleeping Computer reports that it received communications from a ShinyHunters spokesperson stating vishing attacks were conducted on Abbott employees in mid-June, which allowed the group to compromise a Microsoft Entra single sign-on account that provided access to certain internal systems. The group claims to have exfiltrated 30 million rows of customer data, including names, contact information, dates of birth, and one million Social Security numbers.

An investigation has also been launched into a separate claim from a hacker with the moniker ShadowByt3$. This separate attack, so the hacker claims, involved unauthorized access to the Abbott core business via the LabCentral customer portal. The threat actor claims to have gained access on July 4, 2026, using compromised customer credentials, exfiltrating data over the weekend, although no customer or patient data was compromised. Abbott maintains that the third-party hosted portal does not contain sensitive data, only publicly available, non-sensitive data, such as technical product reference documents including operating manuals, product specifications, and troubleshooting checklists.

Abbott is one of several medtech companies to announce cyberattacks and data breaches in recent months, including Stryker, Medtronic, iRhythm, AdaptHealth, and Intuitive.

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