CISA: Medusa Ransomware Has Now Hit Over 500 Critical Infrastructure Organisations
CISA, leading a joint advisory with the FBI and the Department of Health and Human Services, confirmed that the Medusa ransomware gang has breached more than 500 critical infrastructure organisations in the United States since 2021 — up from 300 just over a year ago, according to Bleeping Computer. Targets include healthcare, finance, government, and education. The advisory recommends patching known vulnerabilities, segmenting networks to limit lateral movement (an attacker's ability to move from one system to others once inside), and blocking untrusted remote access.
Sources

