The Top Cyberattacks of July 2021

A July 2021 roundup of major cyber incidents: the REvil-led Kaseya supply-chain ransomware outbreak disrupted MSPs and up to 1,500 downstream businesses globally; a MeteorExpress wiper attack disabled Iran’s national train systems; Chipotle’s marketing email account was used to send phishing messages; and attackers created fake COVID vaccination credentials via Germany’s pharmacists portal. Collectively these events underscore supply-chain risk, critical-infrastructure impact, third-party security weaknesses, and fraud risks to public health systems.