Latest cybersecurity reporting from selected sources.

Microsoft today pushed software updates to fix a staggering 167 security vulnerabilities in its Windows operating systems and related software, including a SharePoint Server zero-day and a publicly disclosed weakness in Windows Defender dubbed "BlueHammer." Separately, Google Chrome fixed its fourth zero-day of 2026, and an emergency update for Adobe Reader nixes an actively exploited flaw that can lead to remote code execution.

Google has released emergency updates to patch another Chrome zero-day vulnerability exploited in attacks, marking the fourth such flaw fixed since the start of the year. [...]

Plus: Google Chrome, Apple bugs also exploited in the wild Happy May Patch Tuesday. We've got a lot of vendors joining this month's patchapalooza, which includes a handful of bugs that have been exploited — either in the wild or at Pwn2Own — and now fixed by Microsoft, Apple, Google and VMware.…

Nothing under exploit… Is this the calm before the storm? Patch Tuesday Microsoft rang in the New Year with a relatively calm Patch Tuesday: Just 49 Windows security updates including fixes for two critical-rated bugs, plus four high-severity Chrome flaws in Microsoft Edge.…

It’s the fifth zero-day to be fixed this year

24 existing bugs fixed. And, we hope, numerous potential future bugs prevented.

One vendor's zero-day is another vendor's routine patch...

Google patches a critical flaw in its Chrome browser, bringing its count of zero-day vulnerabilities fixed in 2022 to four.

Two separate campaigns from different threat actors targeted users with the same exploit kit for more than a month before the company fixed an RCE flaw found in February.