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.
A hole in Microsoft Office is being exploited by bad actors, including Russian hackers targeting Ukraine's government.
Russia-linked hacking group Fancy Bear is exploiting a brand-new vulnerability in Microsoft Office, CERT-UA says ...
APT28's attacks use specially crafted Microsoft Rich Text Format (RTF) documents to kick off a multistage infection chain to deliver malicious payloads.
APT28 exploited a Microsoft Office flaw to deliver MiniDoor and Covenant Grunt malware in targeted attacks across Ukraine and Eastern Europe.
Ukraine’s CERT says the bug went from disclosure to active exploitation in days Russia-linked attackers are already ...
Two malware campaigns weaponize open-source software to target executives and cloud systems, combining social engineering ...
The hosting provider's compromise allowed attackers to deliver malware through tainted software updates for six months.
Attackers are already exploiting one of the 57 vulnerabilities for which Microsoft issued a patch this week, and proof-of-concept (PoC) exploits are publicly available for two other vulnerabilities.
Rapid7 links China-linked Lotus Blossom to a 2025 Notepad++ hosting breach that delivered the Chrysalis backdoor via hijacked updates, fixed in v8.8.9 ...
It's believed that, between June and November 10/December 2, 2025 (independent security experts and its hosting provider ...
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