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

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, 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

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.

Drones are not enough Following a daring drone attack on Russian airfields, Ukrainian military intelligence has reportedly also hacked the servers of Tupolev, the Kremlin's strategic bomber maker.…

The Russian state-backed hacking group Gamaredon (aka "Shuckworm") has been targeting a military mission of a Western country in Ukraine in attacks likely deployed from removable drives. [...]

Secret Blizzard Used Third-party Amadey Bots to Hack Ukrainian Military DevicesA Russian state-backed hacker group used third-party data-stealing bots and possibly a backdoor used by another Russia-based threat group to infiltrate and spy on devices used by frontline Ukrainian military units, according to a report from the Microsoft threat intelligence team.

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.

Attackers Embrace Dating Sites and Encrypted Messaging Apps for Social EngineeringRussian military and intelligence hacking teams continue to refine their Ukrainian targeting, lately shifting to online attacks designed to support and help Moscow's military operations succeed, including social engineering schemes launched via dating portals and encrypted messaging apps.

Justice Department Adds Russian Intelligence Officers to Ukraine Hacking IndictmentThe United States announced a superseding indictment Thursday that adds five Russian military intelligence officers as defendants while warning that Kremlin cyberthreat actors continue to target U.S. and global critical infrastructure.

Also: Cloudflare Was Hacked With Stolen Okta TokenThis week, former CIA programmer gets 40-year sentence, zero trust prevents widespread damage, possible ransomware attack in Georgia, alleged hacker detained in Ukraine, USB-spread malware in Italy, LockBit attack on non-bank home mortgage lender, and Ukrainian critical infrastructure disrupted.

Kyivstar Parent Veon Attributes Losses to Customer Retention MeasuresA December cyberattack on Ukraine's top telecom operator, which authorities in Kyiv attribute to the Russian military, will cost the parent company nearly $100 million. Ukraine in mid-December accused the Russian General Staff Main Intelligence Directorate of perpetuating the incident.

Telecom Operator Slowly Restores Voice ServiceUkraine's domestic security agency on Wednesday fingered Russian military hackers as being responsible for hacking Kyivstar, in a statement acknowledging damage to the telecom operator's digital infrastructure. Ukraine's top telecom operator was the target of a Tuesday cyberattack.

Agency Underscores Risks From Ransomware, State-Aligned Hacking, China and AIThe risk of critical infrastructure hacking in the United Kingdom likely grew in the last year, says the national cybersecurity agency, citing a slew of high-profile ransomware attacks. Russia's invasion of Ukraine is a main driver of growing risk in cyberspace, the agency says.

The Russian state-sponsored hacking group Gamaredon (aka Armageddon, or Shuckworm) continues to target critical organizations in Ukraine's military and security intelligence sectors, employing a refreshed toolset and new infection tactics. [...]

Today, Five Eyes cybersecurity agencies warned critical infrastructure network defenders of an increased risk that Russia-backed hacking groups could target organizations within and outside Ukraine's borders. [...]

The Computer Emergency Response Team of Ukraine (CERT-UA) on Tuesday disclosed that it thwarted a cyberattack by Sandworm, a hacking group affiliated with Russia's military intelligence, to sabotage the operations of an unnamed energy provider in the country