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ThreatsDay Bulletin: Claude Chat Abuse, NastyC2 npm Packages, Device-Code Phishing + 25 More Stories

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The internet did not break this week. It got used exactly as designed, which is worse. Searches were siphoned through shady browser add-ons. AI chat links turned into malware delivery paths. macOS attacks ran in memory and left almost nothing behind. Cloud agents looked like helpers until attackers treated them like open shells. Add exposed edge gear, poisoned packages, cash courier scams,
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INC Ransomware Emerges as Major RaaS Threat in 2026 with 830+ Victims Since 2023

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Cybersecurity researchers have charted the evolution of INC from an nascent ransomware-as-a-service (RaaS) operation to one of the most prolific cybercrime groups in 2026, claiming no less than 830 victims since August 2023. "The disruption of LockBit and the shutdown of BlackCat created opportunities for INC to expand as affiliates migrated to alternative ransomware operations," Acronis
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Microsoft Details Windows Clipper Malware Campaign Using USB LNK Worm and Tor-Based C2

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Microsoft has disclosed details of a Windows-based cryptocurrency clipper campaign that has targeted users since February 2026. "The clipper in this campaign relies on Windows Script Host and ActiveX-driven logic to launch a bundled Tor proxy and poll a hidden-service C2 [command-and-control] server," the Microsoft Defender Security Research Team said in an analysis published Tuesday. "It
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DragonForce Hackers Abuse Microsoft Teams Relays to Hide Backdoor.Turn C2 Traffic

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Threat actors associated with the DragonForce ransomware have been observed using a custom Go-based remote access trojan (RAT) called Backdoor.Turn to conceal command-and-control (C2) traffic inside Microsoft Teams relay infrastructure. According to findings from Broadcom-owned Symantec and Carbon Black, the backdoor was deployed against a major U.S. services firm. The name of the company was
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Orphaned AI Agents: How to Find Hidden Access Risks Inside Your Network

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If an autonomous AI agent interacts with your company's core intellectual property today, can your security team instantly name the person who authorized it? For most enterprises, the answer is a simple no. The rush to adopt internal AI tools has left a massive trail of administrative debt: orphaned agents (AI tools left running after their creator leaves the company) and standing privileges (
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