Latest cybersecurity reporting from selected sources.

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, […]

Threat hunters have discerned new activity associated with an Iranian threat actor known as Infy (aka Prince of Persia), nearly five years after the hacking group was observed targeting victims in Sweden, the Netherlands, and Turkey

Also: macOS Naughty or Nice, Cybercrime Karma, Spoofing Legacy Rail InfrastructureLondon in December: Early to dark, quick to rain but also festive - and a mecca for cybersecurity researchers there for the annual Black Hat Europe conference. This year's event featured nearly 50 briefings that touched on everything from hardware hacking to combing infostealer logs for hidden gems.

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.

Organizations in Belarus, Kazakhstan, and Russia have emerged as the target of a phishing campaign undertaken by a previously undocumented hacking group called ComicForm since at least April 2025

Cybersecurity researchers have discovered a new phishing campaign undertaken by the North Korea-linked hacking group called ScarCruft (aka APT37) to deliver a malware known as RokRAT

Researchers have released a report detailing how a recent WinRAR path traversal vulnerability tracked as CVE-2025-8088 was exploited in zero-day attacks by the Russian 'RomCom' hacking group to drop different malware payloads. [...]

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

The threat actor known as Bitter has been assessed to be a state-backed hacking group that's tasked with gathering intelligence that aligns with the interests of the Indian government

Microsoft Researchers Link Turkish Spy Group to Output Messenger Zero-Day HackA Turkish-linked cyberespionage group known as Marbled Dust exploited a zero-day in the Output Messenger Server Manager application to spy on Kurdish military operations in Iraq. Microsoft reported the hack and called for immediate mitigation to block credential theft and malware delivery.

Malware Hides in Memory, Evades Detection by Endpoint ToolsA Chinese state-backed hacking group tracked as UNC5174 relaunched its operations after a year of silence with a campaign using a memory-only remote access Trojan that evades traditional detection mechanisms, according to new research from cybersecurity firm Sysdig.

The Chinese threat actor known as FamousSparrow has been linked to a cyber attack targeting a trade group in the United States and a research institute in Mexico to deliver its flagship backdoor SparrowDoor and ShadowPad

An Iranian state hacking group is using custom malware to compromise IoT and OT infrastructure in Israel and the United States. An attack wave from Islamic Revolutionary Guard Corps-affiliated "CyberAv3ngers" swept up fuel management systems made by U.S.-based firm Gilbarco Veeder-Root.

The Chinese state-sponsored hacking group Volt Typhoon has begun to rebuild its "KV-Botnet" malware botnet after it was disrupted by law enforcement in January, according to researchers from SecurityScorecard. [...]

Kimsuky, or a Related Group, Deploys XenoRAT VariantA North Korean hacking team hastily pivoted from using publicly available cloud computing storage to its own infrastructure after security researchers unmasked a malware campaign. The group shifted from using cloud service including Google Drive, OneDrive, and Dropbox to systems under its control.

Cybersecurity researchers have uncovered a new macOS malware strain dubbed TodoSwift that they say exhibits commonalities with known malicious software used by North Korean hacking groups

Kapeka Shows Similarities to Russian GRU Hacking Group's GreyEnergy MalwareLikely Russian military intelligence hackers known as Sandworm since at least mid-2022 have deployed a new and highly flexible back door against Eastern European targets, warn security researchers. Security firm WithSecure dubs the backdoor "Kapeka."

Latest APT29 Campaign Uses a Previously Unseen Malware BackdoorA Russian hacking group is targeting German political parties as part of a Moscow-backed espionage campaign. The latest APT29 campaign marks the first time the group has been seen targeting political organizations, according to researchers at Mandiant.

Researchers are warning that a notorious hacking group linked to Russia's Foreign Intelligence Service (SVR) is targeting political parties in Germany for the first time, shifting their focus away from the typical targeting of diplomatic missions. [...]

'Coldriver' Has Been Sending Backdoors Embedded in PDFs Since November 2022A Russian domestic intelligence agency hacking group known for long-lasting logon credential phishing campaigns against Western targets is now deploying malware embedded into PDFs, say security researchers from Google. "Coldriver" is using a family of backdoors Google dubs Spica.