Cybersecurity experts found several serious flaws this week in Windows, Chromium, OpenSSL, Microsoft Exchange, and ServiceNow. Some of these flaws are being used in real attacks, allowing attackers to gain extra access, run harmful code from afar, and get around security measures. At the same time, attackers are using many …

GitHub disabled 73 repositories in four Microsoft groups: Azure, Azure-Samples, Microsoft, and MicrosoftDocs. Each repo now shows GitHub’s “This repository has been disabled. Access to this repository has been disabled by GitHub Staff due to a violation of GitHub’s terms of service” banner. The size and timing suggest that abuse …

A security expert shared a new Microsoft Defender vulnerability called “RoguePlanet” only hours after Microsoft fixed two earlier problems in June 2026 Patch Tuesday. The researcher named Nightmare Eclipse says a new flaw affects fully updated Windows 10 and Windows 11 devices. It lets attackers open a command prompt with SYSTEM …