Tag: Extortion

Microsoft has disrupted a major malware campaign using fraudulent certificates to sign fake Teams installers. The threat actor deployed backdoors and ransomware through spoofed download sites targeting unsuspecting users. Security experts warn this represents an escalation in cybercriminal tactics.

Major Certificate Revocation Operation

Microsoft Threat Intelligence has reportedly revoked more than 200 certificates that were fraudulently signed by threat actors and used in fake Microsoft Teams setup files to deliver backdoors and malware. According to reports, the campaign was identified in late September and involved sophisticated social engineering techniques to compromise users.