Clop ransomware gang names dozens of victims hit by Cleo mass-hack, but several firms dispute breaches

Clop has publicly claimed to have breached dozens of organizations by exploiting a high‑risk flaw in Cleo's enterprise file-transfer products, listing 59 alleged victims on its dark-web leak site and threatening to publish stolen data unless paid; mass exploitation was observed in December, one intrusion (Covestro) has been confirmed, while several listed firms dispute compromise.