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 threat actor known as Turla has been attributed to a previously undocumented .NET backdoor called STOCKSTAY that has been deployed against government and military organizations in Ukraine, and entities that have an interest in Italian foreign policy

The Russian hacking group known as Gamaredon has been attributed to the continued exploitation of a WinRAR vulnerability to deliver multiple malware families aimed at data theft and propagation

GREYVIBE, a Russia-linked group active since 2025, targets Ukraine with AI-assisted malware and five attack chains. Researchers say it’s part spy op, part crime gang. Security firm WithSecure has been tracking a previously unknown Russian-linked APT group called GREYVIBE since at least August 2025. The group targets Ukraine and Ukrainian-related organizations across military, government, civilian, […]

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, Europol Cracks DDoS Networks, Mythos Finds Bugs, France Portal HitThis week, scam compounds. Attackers exploit flaws pre-disclosure. A crackdown on DDoS-for-hire. No Mythos for CISA, yes for Mozilla. France ID portal breach. Israeli and Venezuelan critical infrastructure targeted. Russian hacking in Ukraine. An Apache flaw. A ransomware negotiator aided BlackCat.

The Russian state-sponsored hacking group tracked as APT28 has been observed using a pair of implants dubbed BEARDSHELL and COVENANT to facilitate long‑term surveillance of Ukrainian military personnel

A previously undocumented threat actor has been attributed to attacks targeting Ukrainian organizations with malware known as CANFAIL

The Russia-linked state-sponsored threat actor known as APT28 (aka UAC-0001) has been attributed to attacks exploiting a newly disclosed security flaw in Microsoft Office as part of a campaign codenamed Operation Neusploit

Russia-linked hacking group Fancy Bear is exploiting a brand-new vulnerability in Microsoft Office, CERT-UA says

The Computer Emergency Response Team of Ukraine (CERT-UA) has disclosed details of new cyber attacks targeting its defense forces with malware known as PLUGGYAPE between October and December 2025

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.

The digital intrusion allegedly caused thousands of pounds of meat to spoil and triggered an ammonia leak in the facility A Ukrainian woman accused of hacking US public drinking water systems and a meat processing facility on behalf of Kremlin-backed cyber groups was extradited to the US earlier this year and will stand trial in early 2026.…

The police in Poland arrested three Ukrainian nationals for allegedly attempting to damage IT systems in the country using hacking equipment and for obtaining "computer data of particular importance to national defense." [...]

Sandworm deployed data wipers against Ukrainian governmental entities and companies in the energy, logistics and grain sectors

Nation-State Teams Tied to Grain Sector Targeting, Plus More Joined-Up OperationsRussia's nation-state hacking groups have returned to pummeling Ukrainian targets with destructive, wiper malware, including in apparent attempts to disrupt its economically valuable grain sector, alongside the repeat targeting of allied European nations, researchers report.

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."

First-Ever Malware Tie-Up Spotted Between FSB's Turla and Gamaredon Hacking GroupsTwo long-running advanced persistent threat groups tied to Russia's Federal Security Service, the FSB, called Turla and Gamaredon, appear for the first time to be running a joint cyberespionage operation using their separate malware arsenals, designed to hit high-value targets in Ukraine.

Cybersecurity researchers have discerned evidence of two Russian hacking groups Gamaredon and Turla collaborating together to target and co-comprise Ukrainian entities

Aeroflot Hit With Wiper Malware, Claim Pro-Ukrainian Hackers From BelarusRussia's largest airline, Aeroflot, canceled dozens of flights on Monday and delayed more due to an IT disruption. Two pro-Ukrainian hacking groups from Belarus claimed to have wiped stolen extensive customer data before wiping 7,000 physical and virtual servers used by the airline.