A recent survey of U.S. healthcare IT and cybersecurity professionals found that 93% of the surveyed organizations had experienced at least one cyberattack in the past 12 months, and 72% of those reported that the attacks caused disruption to patient care. The negative impacts were typically delayed intake, increased hospital stays, and increased complications from medical procedures, with 29% of respondents reporting an increase in mortality rate. The problem is getting worse, as last year, 69% of healthcare organizations said cyberattacks had negatively impacted patient care.
The survey was conducted by the Ponemon Institute on behalf of cybersecurity firm Proofpoint on 677 healthcare IT and cybersecurity professionals in the United States. The findings are published in Proofpoint’s report: The 2025 Study on Cyber Insecurity in Healthcare, which looks specifically at the effectiveness of reducing human-targeted cybersecurity risks in the healthcare industry and the cost and impact of cyberattacks on patient safety and care.
Out of the 93% of organizations that experienced a cyberattack, 43 attacks were experienced on average, up from 40 last year. The survey showed that 96% of healthcare organizations experienced at least two incidents involving data loss or exfiltration of patient data, with the majority of respondents reporting that those incidents had a negative impact on patient care.
“Patient safety is inseparable from cyber safety,” said Ryan Witt, vice president of industry solutions at Proofpoint. “This year’s report highlights a stark reality: Cyber threats aren’t just IT issues, they’re clinical risks. When care is delayed, disrupted, or compromised due to a cyberattack, patient outcomes are impacted, and lives are potentially put at risk.”
The report is based on four categories of cyberattacks: cloud/account compromises, supply chain attacks, ransomware attacks, and business email compromise (BEC)/spoofing/impersonation incidents. Supply chain attacks had the biggest impact on patient care, with 87% of victims of supply chain attacks reporting negative impacts such as delayed procedures, poorer outcomes, and increased complications.
When asked about the cost of the single most expensive cyberattack, the answers ranged from $10,000 to more than $25 million, with an average cost of $3.9 million, down from the 2024 average of $4.7 million. The biggest cost was operational disruption, which cost an average of $1,210,172, down 17.6% from last year. Idle time and lost productivity fell by 13.7% year-over-year to an average of $858,832. The average cost of correcting the impact on patient care fell by 21.5% to $853,272, the cost of damage to IT assets and infrastructure fell by 13.8% to $711,060, and the cost of remediation and technical support activities fell by 28.6% to $507,491.
There has been a significant increase in ransomware incidents, which rose from 60% in 2024. While costs are down overall, the cost of ransomware attacks increased from an average of $1.1 million in 2024 to $1.2 million in 2025. The percentage of victims paying the ransom has continued to fall, with 33% of victims choosing to pay compared to 36% last year.
The adoption of AI for security and migration of data to the cloud were the most common protective strategies adopted by healthcare organizations. The survey revealed that 75% of healthcare organizations have or plan to move clinical applications to the cloud, and 30% of respondents use AI for security. The respondents who have adopted AI for security claim the tools are very effective, although 60% said they struggle to protect sensitive data used by AI systems, and the adoption of AI tools is being hampered by interoperability issues and data accuracy problems.
Human error was a key factor in data loss/data exfiltration incidents, with 35% of respondents reporting that data loss was caused by employees not following policies. One-quarter reported data due to privilege access abuse, and one-quarter said it was due to an employee sending PHI to an incorrect recipient. The human factor in cyberattacks is an area being addressed by 76% of organizations. Out of those, 63% said they have regular training and security awareness programs, 51% are monitoring the actions of employees, and 47% are conducting phishing simulations.
“This report underscores the urgent need for healthcare organizations to adopt a human-centric cybersecurity approach—one that not only protects systems and data but also preserves the continuity and quality of care,” said Witt. You can view/download the report here.
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