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Microsoft alerts on cybercriminals and state actors abusing Teams' messaging, calls, and sharing for full attack lifecycle—from reconnaissance with TeamsEnum to exfiltration via GraphRunner and extortion by Octo Tempest. Harden identities, monitor anomalies, and train users to mitigate.

LayerX uncovers CometJacking, exploiting Perplexity’s AI browser via malicious URLs to steal Gmail/Calendar data—tricks AI into Base64-encoded exfiltration, bypassing safeguards. Urgent call for AI security-by-design amid rising agentic threats.

A malicious update to the postmark-mcp server injects a hidden BCC to exfiltrate sensitive emails from thousands of organizations. Koi’s risk engine uncovered the attack, highlighting risks in AI-driven MCP tools. Remove version 1.0.16+ and audit MCP servers now.

Microsoft uncovers advanced XCSSET variant infecting Xcode projects for macOS devs—adds Firefox data exfiltration, crypto wallet clipboard swaps via AES-encrypted AppleScripts, and LaunchDaemon persistence. Mitigate with updates, Defender for Endpoint, and domain blocks.

Microsoft exposes AI-driven phishing campaign targeting US organizations: attackers use AI to craft verbose, business-jargon code in SVG attachments disguised as PDFs, hiding credential-stealing payloads behind invisible dashboards and evading antivirus detection.

Threat actors use in-memory PE loaders to download and run malicious executables (e.g., RATs) via Windows APIs like VirtualAlloc and LoadLibraryA, evading file-based EDR like Microsoft Defender/Sophos. Learn the technique's steps, red team success, and need for memory/behavioral defenses.

Since August 2024, BankBot.Remo variants use WebSocket chunked downloads on spoofed Google Play pages to deliver malware as fake payment/identity apps like IdentitasKependudukanDigital.apk; over 100 Alibaba/Gname domains evade filters—monitor WebSockets and block C2 for defense.

Average breakout time drops to 18 minutes (June-August 2025, per ReliaQuest), fueled by automation and Oyster malware's abuse of rundll32.exe for DLL loading via scheduled tasks. Learn about Gamarue USB attacks, AI-driven malvertising, and defenses like behavioral monitoring.

The npm package "fezbox" (alias janedu) disguises as a JS/TS utility library but hides credential-stealing code in a Cloudinary QR image. Discovered by Socket Threat Research, it uses reversed strings and obfuscation to evade detection—learn risks and defenses like CI/CD scanning and zero-trust dependencies.

Malicious fake online speedtest tools, uncovered September 21, 2025, use obfuscated JavaScript, Node.js, and Inno Setup to exfiltrate system data to C2 servers like cloud.appusagestats[.]com. Learn about XOR-encoded commands, execution risks, and key mitigations like EDR and app whitelisting.