Malcert is a malware family tracked across 1 threat cluster and 1 intelligence report mention on ThreatCluster. First observed May 19, 2026; most recent activity May 19, 2026.
On May 19, 2026, Microsoft disrupted Fox Tempest, a malware-signing-as-a-service (MSaaS) operation that provided over 1,000 fraudulent code-signing certificates to cybercriminals, enabling them to disguise malware as…