The 2023 IBM Security Cost of a Data Breach Report shows the average data breach cost has increased to $4.45 million ($165 per record), with data breaches in the United States being the costliest at an average of $9.48 million, up 0.4% from last year. Data breaches are the costliest that they have ever been and have increased by 15% since 2020. The data for this year’s report was collected by the Ponemon Institute and included breach data from 553 organizations in 16 countries with interviews conducted with thousands of individuals. All data breaches studied for the report occurred between March 2022 and March 2023.
For the 13th year in a row, healthcare data breaches were found to be the costliest, with the average cost increasing to $10.93 million, which is a 53.3% increase over the past 3 years and an 8.22% increase from the $10.10 average breach cost in 2022. Small organizations with fewer than 500 employees saw average data breach costs increase by 13.35% year-over-year to $3.31 million. There was a 21.4% increase in costs for mid-sized organizations (501-1,000 employees) to an average of $4.06 million, a 20% rise in costs for large organizations (1,001-5,000 employees) to $4.87 million, but a 1.8% decrease in costs for very large organizations (10,001–25,000 employees), which fell to an average of $5.46 million. The time to identify and contain a breach remained the same as in 2022 with the decrease in detection time cancelled out by an increase in containment time. In 2023, the average detection (204 days) and containment (73 days) time was 277 days.
The most common causes of data breaches were phishing attacks and compromised credentials, with phishing the initial access vector in 16% of data breaches and compromised credentials the vector in 15% of breaches. The average cost of a phishing attack was $4.76 million and an attack caused by stolen or compromised credentials cost an average of $4.62 million. The costliest breaches were caused by malicious insiders, with those incidents costing an average of $4.90 million per breach, although these breaches were relatively rare, accounting for 6% of the total. Breaches stemming from stolen or compromised credentials took the longest to identify and contain, taking 328 days compared to the average of 277 days.
Only one-third (33%) of data breaches were detected by the breached entity, with a benign third party such as law enforcement or a security researcher notifying the victim about the breach in 40% of cases, and the attacker notifying the breached entity about the attack in 27% of cases. Breaches where the attacker informed the victim cost around $1 million more than breaches that were detected by the victim ($5.23 million vs. $4.3 million). Data breaches that were disclosed by an attacker also had a much longer lifecycle (detection to containment), taking 320 days – 79 days longer than breaches that were identified by the victim.
Data breaches often occur in multiple locations such as on-premises as well as public and private clouds. IBM Security found attackers were able to breach multiple environments undetected, and when multiple environments were breached the costs soared. Multi-environment breaches cost an average of $750,000 more than data breaches in single environments and took 15 days longer to contain. Malicious attacks often rendered systems inoperable with destructive attacks accounting for 25% of all malicious attacks and ransomware accounting for 24% of attacks. Destructive attacks cost an average of $5.24 million and ransomware attacks cost an average of $5.13 million. 47% of ransomware victims chose to pay the ransom.
IBM Security was able to dispel a common myth – that involving law enforcement involvement in ransomware attacks increases the complexity and recovery time, when the reverse was found to be true. Ransomware attacks with law enforcement involvement took an average of 33 days less to contain than when law enforcement was not involved, and law enforcement involvement also shaved an average of $470,000 off the breach cost. Despite speeding up recovery and significantly reducing breach costs, 37% of ransomware victims did not seek help from law enforcement to contain a breach.
Law enforcement recommends not paying the ransom as there is no guarantee of a faster recovery and payment of a ransom encourages further attacks. IBM Security found that paying the ransom only resulted in minimal savings – a cost difference of $110,000 or $2.2%, although that does not include the ransom amount. Taking the ransom payment into consideration, many organizations ended up paying more than they would likely have spent had they chosen not to pay the ransom.
The biggest cost mitigators were the adoption of a DecSecOps approach (integrating security in the software development cycle), which saved almost $250,000 on average, employee training (-$233,000), incident response planning and testing (-$232,000), and AI and machine learning insights (-$225,000). AI and automation shaved an average of 108 days from identification and containment and attack surface management (ASM) solutions shaved an average of 83 days off of the response time. The biggest cost amplifiers were security systems complexity (+$241,000), security skills shortages (+$239,000), and non-compliance with regulations (+$219,000).
The report revealed 95% of organizations had suffered more than one breach and the costs of these breaches were passed onto consumers by 57% of organizations, with only 51% of organizations increasing security investments following a data breach.
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