Ukraine's Computer Emergency Response Team (CERT) says that Russian hackers are exploiting CVE-2026-21509, a recently patched vulnerability in multiple versions of Microsoft Office.

Microsoft 365 is under attack, China and Russia afflited hackers suspected. Updated December 23 with advice from a mobile security solutions expert regarding the Russian device code attacks targeting ...

APT28's attacks use specially crafted Microsoft Rich Text Format (RTF) documents to kick off a multistage infection chain to deliver malicious payloads.

Ukraine's defenders have spotted a new hacking attack ...

Microsoft now says suspected Russian hackers behind a massive campaign that impacted government agencies, local municipalities and companies were also able to view some of the company’s source code.

The Russian hacker group Curly COMrades is abusing Microsoft Hyper-V in Windows to bypass endpoint detection and response solutions by creating a hidden Alpine Linux-based virtual machine to run ...

RICHMOND, Va. (AP) — Microsoft says the same Russia-backed hackers responsible for the 2020 SolarWinds breach continue to attack the global supply chain and have been targeting cloud service resellers ...

Threat actors supporting Russia's geopolitical interests are using Linux-based virtual machines (VMs) to obfuscate their activities from Windows endpoint security tools. The group is tracked as "Curly ...

Cybercriminals and state-sponsored hackers are increasingly exploiting Microsoft’s legitimate OAuth 2.0 device authorization process to hijack enterprise accounts, bypassing multifactor authentication ...