New threat actor targets Bulgaria, China, Vietnam and other countries with customized Yashma ransomware

Cisco Talos discovered an unknown threat actor, seemingly of Vietnamese origin, conducting a ransomware operation that began at least as early as June 4, 2023. This ongoing attack uses a variant of the Yashma ransomware likely to target multiple geographic areas by mimicking WannaCry...

Evasive maneuvers: HTML smuggling explained

Microsoft Threat Intelligence Center MSTIC last week disclosed “a highly evasive malware delivery technique that leverages legitimate HTML5 and JavaScript features” that it calls HTML smuggling. HTML smuggling has been used in targeted, spear-phishing email campaigns that deliver banking Trojans...