Latest cybersecurity reporting from selected sources.

Ukraine’s SSU and the FBI Just Confirmed Russian Intelligence Has Been Systematically Hacking Messenger Accounts for Years. The Security Service of Ukraine (SSU), working jointly with the FBI, has formally exposed a sustained Russian intelligence campaign targeting the messaging accounts of government officials, military personnel, politicians, and activists across Ukraine, Europe, and the United States. […]

The Russian state-sponsored hacking group known as Turla has transformed its custom backdoor Kazuar into a modular peer-to-peer (P2P) botnet that's engineered for stealth and persistent access to compromised hosts

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.

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. [...]

Ukrainian National Twice Indicted in Los Angeles for Pro-Russian HackingU.S. and allied agencies warned of low-skill Russian-linked hacktivists breaching critical infrastructure by exploiting weak remote access tools, as federal prosecutors charged a Ukrainian national with helping orchestrate operations targeting water and energy systems.

Suspect May Be Military Officer Indicted by US for 2016 Election InterferencePolice in Thailand have arrested a Russian citizen suspected of launching hack attacks against targets around the world, who's wanted by the FBI. While the suspect hasn't been named, his age matches that of a Russian military intelligence officer indicted for 2016 U.S. election interference.

A Ukrainian man indicted in 2012 for conspiring with a prolific hacking group to steal tens of millions of dollars from U.S. businesses was arrested in Italy and is now in custody in the United States, KrebsOnSecurity has learned. Sources close to the investigation say Yuriy Igorevich Rybtsov, a 41-year-old from the Russia-controlled city of Donetsk, Ukraine, was previously referenced in U.S. federal charging documents only by his online handle "MrICQ." According to a 13-year-old indictment filed by prosecutors in Nebraska, MrICQ was a developer for a cybercrime group known as "Jabber Zeus."

A threat actor with ties to China has been attributed to a five-month-long intrusion targeting a Russian IT service provider, marking the hacking group's expansion to the country beyond Southeast Asia and South America

Seven-year-old Cisco vuln that remains inexplicably unpatched is their way in The US State Department has put a $10 million bounty on the heads of three Russians accused of being intelligence agents hacking America's critical infrastructure - primarily via old Cisco kit, it seems.…

US Reportedly Blames Kremlin for Major Breach Affecting Court Management SystemU.S. Department of Justice officials were reportedly recently informed that "persistent and sophisticated cyberthreat actors have recently compromised sealed records" in a widespread attack on a court management system containing sensitive records with potential national security implications.

Also: CoinDCX's $44 Million Exploit, Crypto Theft Hit $2.17B in First Half of 2025This week, Russia crypto laundering in Krygyzstan, CoinDCX lost $44M in a hack, the U.S. sought $7.1M in crypto linked to oil tank investment scam, Ex-NCA officer was jailed for stealing seized bitcoin, crypto thefts hit $2.17B in the first half of 2025 and Trump Media revealed $2B bitcoin holdings.

Also, O Canada, Oh Brother and More Probable Chinese HackingThis week, ransomware kills, Salt Typhoon hit Canada, Russian backdoors, SAP and Citrix patches, China hackers in the oil and energy sector. Brother printers have an unfixable flaw. Ransomware hit a U.S. dairy cooperative. Hackers in Albania and Oxford. European lawmakers heard cybersecurity advice.

Iranian OT Hacking Team Has Gone Quiet … Too QuietArmed exchanges between Iran and Israel and the prospect of U.S. armed intervention against Tehran has cyber defenders warning about hacking risks to critical infrastructure. Iran's CyberAv3ngers doesn't possess the sophistication of Chinese or Russian actors but it's still a persistent threat.

OpenAI has revealed that it banned a set of ChatGPT accounts that were likely operated by Russian-speaking threat actors and two Chinese nation-state hacking groups to assist with malware development, social media automation, and research about U.S. satellite communications technologies, among other things

Also, Crypter Takedown, Threat Intel Naming Accord and Regulators Ping CrowdStrikeThis week, Ukraine hacked Tupelov, Russian hacking, crypter sites seized and the U.S. will seize North Korean IT worker crypto. Regulators probed CrowdStrike. A Rosetta Stone for intel. A Romanian man admitted to swatting, Lee Enterprises hack exposed data and an FBI vet joined the private sector.

A newly-discovered Russian group, Void Blizzard, has successfully compromised organizations in critical industries, Microsoft warned

'Laundry Bear' Has Been Active Since 2024Dutch intelligence agencies and Microsoft say a novel Russian state intelligence hacking group is likely buying stolen credentials from criminal marketplaces to gain entry to North American and European networks. It has "a specific interest in European Union and NATO member states."

Suspected LockBit, Babuk Operator Mikhail Matveev Arrested in RussiaA prolific ransomware affiliate hacker and developer is facing criminal charges in Russia, Kremlin media reported Friday. Mikhail Pavlovich Matveev has been wanted by U.S. authorities since 2023 for his role in hacking activities as part of ransomware groups including LockBit, Hive and Babuk.

Posing as an application used to locate Ukrainian military recruiters, a Kremlin-backed hacking initiative delivers malware, along with disinformation designed to undermine sign-ups for soldiers in the war against Russia.

Microsoft and the Justice Department have seized over 100 domains used by the Russian ColdRiver hacking group to target United States government employees and nonprofit organizations from Russia and worldwide in spear-phishing attacks. [...]