Latest cybersecurity reporting from selected sources.

Also: AscendEX Shuts Down; Ethereum Foundation on AI Bug HuntingThis week, Ostium paused trading, AscendEX shut down, Ethereum said AI hastens bug hunting, not verification, the United States charged an inmate over seized transfer, ex-Sheriff's deputy jailed for extortion, Tangem card security, Iran-linked wallets sanctions and the U.S. may drop BitClub charges.

Also: Former Hodlnaut CEO Charged and Stake DAO Hit by ExploitEvery week, ISMG rounds up cybersecurity incidents in digital assets. This week, the U.S. sanctioned Iran's largest exchange, ex-Hodlnaut CEO faced charges, the U.S. Securities and Exchange Commission sued over a $12.3M AI crypto scam and exploits hit Gravity Bridge, Stake DAO and Gnosis Pay.

The U.S. Treasury's Office of Foreign Assets Control (OFAC) has announced sanctions against Nobitex, Iran's largest cryptocurrency exchange, for facilitating payments related to terrorist activities. [...]

Also: US Sanctions UK-Registered Exchanges Over Iran TiesThis week, Step Finance and CrossCurve hacks, the United States sanctioned U.K.-registered exchanges over Iran ties, forfeiture finalization of funds linked to Helix, Coinbase data breach, 2025's illicit crypto flows and a UK regulator banned Coinbase ads.

Also: NodeCordRAT Malware, North Korean QR-Phishing CampaignThis week, U.K. crypto exchanges linked to Iranian sanctions evasion, NodeCordRAT malware spread via npm, an FBI alert on North Korean QR-code phishing, illicit crypto hit $154 billion in 2025 and U.S. President Donald Trump said he won't pardon Sam Bankman-Fried.

Also: Man Denied Bankruptcy Discharge Over $12.5M Crypto Ponzi DebtsU.S. sanctions Iranian shadow banking network, Texas man denied bankruptcy discharge, Nemo blames $2.6M exploit on developer errors, THORChain founder hacked, Shibarium Bridge hit by $2.4M hack, Denver court rules pastor's $3.3M project a fraud and NYDFS tells banks to use blockchain analytics.

An Iranian national has pleaded guilty in the U.S. over his involvement in an international ransomware and extortion scheme involving the Robbinhood ransomware