Zero Day Wire

Zero Day Wire
CISA Silently Updated Ransomware Intelligence on 59 Vulnerabilities in 2025 Without Notifying Defenders

Alerts

CISA Silently Updated Ransomware Intelligence on 59 Vulnerabilities in 2025 Without Notifying Defenders

CISA has been silently updating its Known Exploited Vulnerabilities (KEV) catalog when it confirms that vulnerabilities are being exploited by ransomware groups — without notifying defenders when those changes occur. Glenn Thorpe, senior director of security research and detection engineering at GreyNoise, documented the gap by downloading daily KEV snapshots for

By Zero Day Wire
APT28 Weaponizes Microsoft Office Zero-Day Within 24 Hours, Targets Ukraine and EU with Covenant Backdoor

Alerts

APT28 Weaponizes Microsoft Office Zero-Day Within 24 Hours, Targets Ukraine and EU with Covenant Backdoor

Russian state-sponsored hacking group APT28 weaponized a critical Microsoft Office zero-day vulnerability within 24 hours of public disclosure, launching targeted attacks against Ukrainian government agencies and European Union institutions. Ukraine's Computer Emergency Response Team (CERT-UA) detected exploitation attempts beginning January 27 — just one day after

By Zero Day Wire
Chinese APT Lotus Blossom Hijacked Notepad++ Updates for Six Months, Deploying New Chrysalis Backdoor

Threats

Chinese APT Lotus Blossom Hijacked Notepad++ Updates for Six Months, Deploying New Chrysalis Backdoor

Chinese state-sponsored threat actors compromised the update infrastructure for Notepad++, the popular open-source text editor with tens of millions of Windows users, and maintained access for nearly six months while selectively targeting victims with malicious updates. The Notepad++ development team confirmed the breach today, stating that attackers intercepted

By Zero Day Wire