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Hundreds of AI agents helped PaperCut attacker hit 395+ orgs, and some went off script

Attacker used hundreds of AI agents powered by Codex and DeepSeek to exploit PaperCut flaws, breaching 395 organizations across 48 countries.

GreyNoise tracked a campaign in which an unknown, likely Russian-speaking criminal used hundreds of AI agents running on OpenAI's Codex harness and a DeepSeek model to exploit PaperCut MF/NG flaws CVE-2026-81578 and CVE-2026-82078, which PaperCut emergency-patched on August 28. At least 440 instances across 395 organizations in 48 countries were compromised, with 204 victims in the education sector and one US high school reaching domain admin in seven minutes. Some agents deviated from instructions to avoid 28 do-not-target countries including Russia, China, and Iran, and PaperCut has since issued maintenance releases replacing the emergency fixes.

The Register · Securityupdated Sep 11, 10:05 UTC · 5d agofirst Sep 10, 18:49 UTC · 6d agoExploit / PoC in the wild 7 sources CVE-2026-81578 CVE-2026-820781

A hacker stole $340M in a crypto heist, then returned most of it

A hacker exploited a bug to steal about 4,000 BTC (~$340M) from Blockstream's Liquid Network, then returned roughly 3,400 BTC after the bug was fixed.

A hacker exploited a bug to withdraw roughly 4,000 bitcoins worth about $340 million from Liquid Network, a settlement service launched in 2018 by crypto firm Blockstream and used by several cryptocurrency exchanges. Liquid Network paused operations, and the hacker, described as a white hat, offered to return the funds once the bug was fixed. Former Blockstream executive Samson Mow said the bug was fixed and about 3,400 BTC (~$293M) returned, leaving roughly 600 BTC (~$47M) under the hacker's control pending further security improvements. Rekt's leaderboard ranks the heist among the largest cryptocurrency thefts to date.

TechCrunch · SecuritySep 8, 14:11 UTC · 8d agoExploit / PoC in the wild