Security Affairs reveals SleeperGem backdoor in RubyGems

The Security Affairs Malware Newsletter Round 107, published by Pierluigi Paganini on July 26, 2026, provides an overview of significant malware-related articles and research. It covers various new threats and techniques related to malware, including the 'SleeperGem' backdoor from compromised RubyGems, 'AgentBaiting' malware from fake AI servers, and the 'HOLLOWGRAPH' exploit using Microsoft 365 Calendars as covert command-and-control channels.

Other notable topics include chaos ransomware, AI-driven malware analysis, and the impact of attacks targeting organizations like Thailand’s Ministry of Finance. The newsletter serves as a comprehensive resource for the latest trends and research in malware security.