Canadian health agency vendor suffered major ransomware attack in 2025
TL;DR
A vendor for Ontario's home care agency suffered a ransomware attack in March 2025, with details kept secret for months, raising concerns over patient notification delays.
Source: Global News
A vendor contracted by the agency in charge of overseeing Ontario’s home care system suffered a ransomware attack, Global News can reveal – details the province didn’t share after the incident. Ontario Health atHome, a body created by the Ford government to coordinate resources for home care and palliative patients, came under scrutiny last year after one of its vendors was hit with a cyberattack that was kept under wraps for months. The vendor, Ontario Medical Supply (OMS), was first infiltrated in Mar. 2025, before the company was locked out of “a significant portion” of its servers. Ontario Health atHome didn’t immediately alert patients about the breach, but an Ontario Liberal MPP raised the alarm more than two months after the incident. Even then, details from the government about the attack were scarce. Full Story