Microsoft has resolved a bug that caused Windows Defender to crash after a recent security update, resulting in 0xc0000005 access violation errors on some affected systems. [...]

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) warned that hackers are exploiting a critical-severity remote code execution (RCE) flaw in the Windows Internet Key Exchange (IKE) Service Extensions component. [...]

Microsoft has reminded customers that systems running Home and Pro editions of Windows 11 24H2 will stop receiving updates in two months. [...]

The FBI said Tuesday that the Medusa ransomware gang has breached more than 500 critical infrastructure organizations in the United States since June 2021. [...]

Microsoft has started testing a faster File Explorer and a less cluttered and more customizable context menu in Windows 11 preview builds rolling out to Insiders this week. [...]

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has confirmed that ransomware gangs are also exploiting a high-severity Windows Task Host vulnerability that was flagged as actively exploited in April. [...]

Microsoft says some users are experiencing issues searching in Microsoft 365 apps, including Outlook on the web, Outlook desktop, SharePoint Online, and OneDrive. [...]

Microsoft announced that it removed the Windows Management Instrumentation Command-line (WMIC) tool from Windows 11 24H2 and 25H2, as well as from Windows 11 beta builds released this week. [...]

Microsoft has reminded IT administrators that Windows Server 2022 is rapidly approaching its mainstream end date of October 2026, when it will switch to extended support. [...]

Tech giants General Electric (GE) and Philips have also confirmed they're investigating claims that the Clop ransomware gang breached their systems and stole data. [...]

The French Ministry of the Economy and Finance has disclosed a data breach after an attacker accessed the General Directorate of Public Finances (DGFiP) systems and stole data belonging to 678,000 individuals. [...]

Microsoft is working on a security patch for the "ShieldBreak" zero-day vulnerability disclosed last week by security researcher "Nightmare Eclipse" and now tracked as CVE-2026-69414. [...]

A maximum-severity SAP Commerce Cloud remote code execution vulnerability patched three days ago is already being targeted in attacks, according to threat intelligence company Defused. [...]

Oil giant Shell has confirmed it is investigating a potential security incident after the Clop ransomware gang claimed it stole 89GB of data. [...]

The ShinyHunters extortion group stole personal information from 1.6 million RingCentral accounts after hacking the company in July, according to the data breach notification service Have I Been Pwned. [...]

A former data analyst contractor for Brightly Software has been sentenced to two years in prison for targeting his employer in a $2.5 million extortion scheme. [...]

Microsoft has released security patches to address a Windows zero-day vulnerability known as "LegacyHive," disclosed after the July 2026 Patch Tuesday. [...]

Hardware wallet manufacturer Trezor disclosed a data breach affecting nearly 14,000 of its customers after ShipMonk, its shipping and logistics provider, was hacked [...]

A new White House memo signed by U.S. President Donald Trump instructs the National Coordination Center (NCC) to establish a program that would allow private security companies to apply for approval to hack foreign cybercrime organizations. [...]