Microsoft Patch Tuesday, December 2025 Edition
Microsoft today pushed updates to fix at least 56 security flaws in its Windows operating systems and supported software. This final Patch Tuesday of 2025 tackles one zero-day bug that is already being exploited, as well as two publicly disclosed vulnerabilities.
Most Parked Domains Now Serving Malicious Content
Direct navigation -- the act of visiting a website by manually typing a domain name in a web browser -- has never been riskier: A new study finds the vast majority of "parked" domains -- mostly expired or dormant domain names, or common misspellings of popular websites -- are now
Dismantling Defenses: Trump 2.0 Cyber Year in Review
The Trump administration has pursued a staggering range of policy pivots this past year that threaten to weaken the nation’s ability and willingness to address a broad spectrum of technology challenges, from cybersecurity and privacy to countering disinformation, fraud and corrup
Happy 16th Birthday, KrebsOnSecurity.com!
KrebsOnSecurity.com celebrates its 16th anniversary today! A huge "thank you" to all of our readers -- newcomers, long-timers and drive-by critics alike. Your engagement this past year here has been tremendous and truly a salve on a handful of dark days. Happily, comeuppance was
The Kimwolf Botnet is Stalking Your Local Network
The story you are reading is a series of scoops nestled inside a far more urgent Internet-wide security advisory. The vulnerability at issue has been exploited for months already, and it's time for a broader awareness of the threat. The short version is that everything you though
Who Benefited from the Aisuru and Kimwolf Botnets?
Our first story of 2026 revealed how a destructive new botnet called Kimwolf rapidly grew to infect more than two million devices by mass-compromising a vast number of unofficial Android TV streaming boxes. Today, we'll dig through digital clues left behind by the hackers, networ
Patch Tuesday, January 2026 Edition
Microsoft today issued patches to plug at least 113 security holes in its various Windows operating systems and supported software. Eight of the vulnerabilities earned Microsoft's most-dire "critical" rating, and the company warns that attackers are already exploiting one of the
When the Cloud Rains on Everyone's IoT Parade
What happens to all of those always-connected devices when the cloud goes down? Disruptions to sleep, school, and smart homes, just to name a few issues.
Sunken Ships: Will Orgs Learn From Ivanti EPMM Attacks?
The April/May zero-day exploitations of Ivanti's mobile device management platform meant unprecedented pwning of thousands of orgs by a Chinese APT — and history will probably repeat itself.
CTO New Year's Resolutions for a More Secure 2026
From securing supply chain defenses and MCPs across AI workflows to formal AI and quantum governance, experts share their wish lists for cyber safety in 2026.
Cybersecurity Predictions for 2026: Navigating the Future of Digital Threats
Cybersecurity experts discuss 2026 predictions, highlighting the rise of AI-driven threats, the shift to resilience over prevention, and the urgent need for advanced security measures to combat evolving risks.
RondoDox Botnet Expands Scope With React2Shell Exploitation
Recent attacks are targeting Next.js servers and pose a significant threat of cryptomining, botnet payloads, and other malicious activity to IoT networks and enterprises.