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.

A China-linked threat cluster has been exploiting vulnerable Roundcube servers at U.S. and Canadian universities to steal credentials and deploy backdoor malware. [...]

A suspected China-aligned threat activity cluster has been observed exploiting Roundcube webmail software belonging to physics and engineering departments of U.S. and Canadian universities as part of a new campaign

CloudSEK maps Operation Escaneo, a campaign hitting Latin American infrastructure via perimeter bugs

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.Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added a newly disclosed vulnerability impacting Cisco Catalyst SD-WAN Controller to its Known Exploited Vulnerabilities (KEV) catalog, requiring Federal Civilian Executive Branch (FCEB) agencies to remediate the issue by May 17, 2026

Also, YellowKey Bypasses BitLocker, Škoda Breach, Kingdom Market Operator JailedThis week, U.S. lawmakers urged action on AI, a BitLocker exploit. Škoda, Nvidia’s GeForce NOW partner and telehealth firm OpenLoop reported breaches. Patch Tuesday. A dark market operator sentenced and pro-Ukraine and Iranian-linked hacking. Nitrogen ransomware attack on Foxconn.

Also: ZachXBT Uncovers DPRK Worker Scam, Hyperbridge Hack, Coinone FineThis week, Operation Atlantic disrupts $45M phishing fraud, ZachXBT uncovers DPRK crypto worker scheme, Hyperbridge exploit, South Korea fines Coinone $3.5M, Kraken faces extortion attempt over insider data leak and American musician loses $420K in fake Ledger app.

Also, Lloyds Data Leak, Dutch Treasury Breach, Citrix Bug Exploit, Pay2Key ActivityThis week, Lloyds data leak hits 450K, Dutch treasury breach, Citrix flaw exploited, Iran-linked ransomware ops, TrueConf zero-day, Russian fraud ring sentenced, Romania targeted, patch gaps persist, and U.S. hospital breach affects 257K.

Also: Chinese Firms Indicted in Crypto-Linked Fentanyl Supply CaseThis week, charges filed in Uranium Finance hack, indictment of Chinese firms in fentanyl supply case, a class action lawsuit against Nvidia, Drift Protocol exploit, KuCoin operational barriers in the United States and a U.K. sanction filed against Xinbi.

CISA ordered U.S. government agencies to patch three iOS vulnerabilities targeted in cryptocurrency theft and cyberespionage attacks using the DarkSword exploit kit. [...]

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has urged government agencies to apply patches for two security flaws impacting Synacor Zimbra Collaboration Suite (ZCS) and Microsoft Office SharePoint, stating they have been actively exploited in the wild

The kit, named DarkSword, has a variety of possible implications, the research from iVerify, Lookout and Google suggests. The post Second iOS exploit kit now in use by suspected Russian hackers appeared first on CyberScoop.

Also: Detainment in GainBitcoin Case, Solv Protocol and Gondi HacksThis week, an arrest in a $46M U.S. Marshals theft, a detainment in the GainBitcoin case, exploits at Solv Protocol and Gondi, an Alibaba AI agent's mining attempt, the SEC dropping claims against Justin Sun, Treasury weighing in on mixers, Bithumb facing suspension and a lawsuit against Coinbase.

CISA ordered U.S. federal agencies to patch three iOS security flaws targeted in cyberespionage and crypto-theft attacks using the Coruna exploit kit. [...]

The U.S. Treasury Department has sanctioned a Russian exploit broker who bought stolen hacking tools from a former executive of a U.S. defense contractor. [...]

A 39-year-old Australian national who was previously employed at U.S. defense contractor L3Harris has been sentenced to a little over seven years in prison for selling eight zero-day exploits to Russian exploit broker Operation Zero in exchange for millions of dollars

The former head of Trenchant, a specialized U.S. defense contractor unit, was sentenced Tuesday to more than seven years in federal prison for stealing and selling zero-day exploits to a Russian exploit broker whose clients include the Russian government. [...]

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added four security flaws to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation in the wild

Also, Active Exploits Hit SolarWinds, Ivanti as APT28 Targets EU, UkraineThis week, Italy blocked Russian cyberattacks targeting the Olympics. Flaws in SolarWinds, Ivanti and Microsoft Office. Russia's APT28 ramped up attacks in Ukraine, supply chain attacks, regulators probed major breaches and a U.S. judge sentenced the operator of a darkweb drug marketplace.