The top 3 healthcare attacks in 2025 and how to defend against them

Nearly one-third of all healthcare email incidents were attributed to vendor and business associate email exposure, making it the most frequent attack pattern.

Stolen login credentials led to the most damaging email-related healthcare breaches in 2025, exposing more than 630,000 patient records.

630,000 healthcare patient records were exposed due to stolen login credentials alone.

Approximately 17% of healthcare email breaches were the result of phishing-driven mailbox takeovers.

Less than one-fifth of total healthcare email incidents involved identity abuse via stolen credentials, yet these remained the most damaging type of attack.