Microsoft has resolved a known issue that was causing security applications to incorrectly flag a core Windows component, the company said in a service alert posted this week. [...]

Microsoft has started rolling out new Secure Boot certificates that will automatically install on eligible Windows 11 24H2 and 25H2 systems. [...]

Microsoft has released the KB5073724 extended security update to fix the Patch Tuesday security updates, including 3 zero-days and a fix for expiring Secure Boot certificates. [...]

Today is Microsoft's January 2026 Patch Tuesday with security updates for 114 flaws, including one actively exploited and two publicly disclosed zero-day vulnerabilities. [...]

Microsoft will start enforcing multi-factor authentication (MFA) for all users accessing the Microsoft 365 admin center starting next month. [...]

After twenty-six years, Microsoft is finally upgrading the last remaining instance of the encryption algorithm RC4 in Windows. of the most visible holdouts in supporting RC4 has been Microsoft. Eventually, Microsoft upgraded Active Directory to support the much more secure AES encryption standard. But by default, Windows servers have …

Free unofficial patches are available for a new Windows zero-day vulnerability that allows attackers to crash the Remote Access Connection Manager (RasMan) service. [...]

A new variation of the ClickFix attack dubbed 'ConsentFix' abuses the Azure CLI OAuth app to hijack Microsoft accounts without the need for a password or to bypass multi-factor authentication (MFA) verifications. [...]

Microsoft says Windows PowerShell now warns when running scripts that use the Invoke-WebRequest cmdlet to download web content, aiming to prevent potentially risky code from executing. [...]

Microsoft has released the KB5071546 extended security update to resolve 57 security vulnerabilities, including three zero-day flaws. [...]

Microsoft's December 2025 Patch Tuesday fixes 57 flaws, including one actively exploited and two publicly disclosed zero-day vulnerabilities. [...]

Microsoft has silently "mitigated" a high-severity Windows LNK vulnerability exploited by multiple state-backed and cybercrime hacking groups in zero-day attacks. [...]

Microsoft is working to mitigate an ongoing incident that has been blocking access to some Defender XDR portal capabilities for the past 10 hours. [...]

Starting in mid-to-late October 2026, Microsoft will enhance the security of the Entra ID authentication system against external script injection attacks. [...]

Microsoft has warned IT administrators to prepare for the removal of Windows Internet Name Service (WINS) from Windows Server releases starting in November 2034. [...]

Windows 11 migration is inevitable as Windows 10 support ends, and unsupported systems create major security and ransomware risks. Acronis explains how to use this migration to review backups, strengthen cybersecurity, and ensure data stays recoverable. [...]

Microsoft’s warning on Tuesday that an experimental AI agent integrated into Windows can infect devices and pilfer sensitive user data has set off a familiar response from security-minded critics: Why is Big Tech so intent on pushing new features before their dangerous behaviors can be fully understood and …

Microsoft has confirmed it is investigating a bug causing the Windows 10 KB5068781 extended security update to fail to install with 0x800f0922 errors on devices with corporate licensing. [...]

Microsoft is rolling out a new Teams feature for Premium customers that will automatically block screenshots and recordings during meetings. [...]

Microsoft has released the KB5068781 update, the first Windows 10 extended security update since the operating system reached end of support last month. [...]

Today is Microsoft's November 2025 Patch Tuesday, which includes security updates for 63 flaws, including one actively exploited zero-day vulnerability. [...]

The U.S. government is reportedly preparing to ban the sale of wireless routers and other networking gear from TP-Link Systems, a tech company that currently enjoys an estimated 50% market share among home users and small businesses. Experts say while the proposed ban may have more to do …

With the first Patch Tuesday following Windows 10's end of support approaching next week, users who continue to run the operating system should enroll in the Extended Security Updates (ESU) program to remain protected against newly discovered security vulnerabilities. [...]

For the past week, domains associated with the massive Aisuru botnet have repeatedly usurped Amazon, Apple, Google and Microsoft in Cloudflare’s public ranking of the most frequently requested websites. Cloudflare responded by redacting Aisuru domain names from their top websites list. The chief executive at Cloudflare says Aisuru …

Microsoft plans to remove Defender Application Guard from Office by December 2027, starting with the February 2026 release of Office version 2602. [...]