25 Sep, 2026

Microsoft Defender can now automatically isolate hacked endpoints

Microsoft is testing a new Defender for Endpoint capability that will automatically isolate compromised endpoints to thwart attackers’ attempts to move laterally across the network. This is now available in preview mode and works as part of automatic attack disruption, a feature designed to contain attacks, limit their impact, and provide security teams with more remediation time. […]

2 mins read

Microsoft: Domain Controller lookup may fail on Windows Server 2016

Microsoft has confirmed a new known issue affecting Windows Server 2016 systems that causes domain controller lookups to fail after installing the KB5087537 May 2026 security update. Windows Server 2016 reached the end of mainstream support in January 2022, but Microsoft has pushed back the extended support end date by 5 years to allow customers to […]

1 min read

Microsoft shares mitigation for YellowKey Windows zero-day

Microsoft has shared mitigations for YellowKey, a recently disclosed Windows BitLocker zero-day vulnerability that grants access to protected drives. The security flaw was disclosed last week by an anonymous security researcher known as ‘Nightmare Eclipse,’ who described it as a backdoor and published a proof-of-concept (PoC) exploit. Nightmare Eclipse said that exploiting this zero-day involves placing specially […]

3 mins read

Microsoft plans to improve Windows 11 driver quality in 2026

Microsoft plans to raise the quality bar of Windows 11 drivers, as drivers “sit at the heart of every Windows experience” and connect the OS to the “silicon, components, and peripherals.” Before Microsoft shipped Windows 11, it frequently hosted WinHEC (Windows Hardware Engineering Conference), where Microsoft’s developers and OEM partners met to work on quality. […]

3 mins read

Microsoft confirms patching issues in restricted Windows networks

Microsoft says customers in restricted network environments may encounter Windows Update failures after installing the January 2026 optional non-security preview updates. In Windows network-restricted environments, ranging from fully isolated, air-gapped systems to strictly firewalled networks, affected systems will display error code 0x80010002 when updating through Windows Update. “Affected devices might be able to download the […]

2 mins read

Microsoft testing adjustable taskbar, Start menu in Windows 11

Microsoft has finally brought back the resizable taskbar and Start menu to Windows 11 in the latest preview version rolling out to Insiders in the Experimental channel. Starting with Windows 11 Insider Preview Build 26300.8493, the taskbar can now be configured to use smaller buttons and moved to the bottom, top, left, or right side of […]

3 mins read

Microsoft confirms Windows 11 security update install issues

Microsoft has confirmed that the May 2026 Windows 11 security update (KB5089549) fails to install on some systems and triggers 0x800f0922 errors. This known issue is caused by insufficient free space on the EFI System Partition (ESP), which results in the update automatically rolling back on affected devices. “This issue affects devices with limited free […]

2 mins read

New Windows ‘MiniPlasma’ zero-day exploit gives SYSTEM access, PoC released

A cybersecurity researcher has released a proof-of-concept exploit for a Windows privilege escalation zero-day dubbed “MiniPlasma” that lets attackers gain SYSTEM privileges on fully patched Windows systems.  The exploit was published by a researcher known as Chaotic Eclipse, or Nightmare Eclipse, who released both the source code and a compiled executable on GitHub after claiming […]

4 mins read

Microsoft Exchange, Windows 11 hacked on second day of Pwn2Own

During the second day of Pwn2Own Berlin 2026, competitors collected $385,750 in cash awards after exploiting 15 unique zero-day vulnerabilities in multiple products, including Windows 11, Microsoft Exchange, and Red Hat Enterprise Linux for Workstations. The Pwn2Own Berlin 2026 hacking competition takes place at the OffensiveCon conference from May 14 to May 16 and focuses on enterprise technologies and […]

2 mins read

Microsoft to automatically roll back faulty Windows drivers

Microsoft is introducing a new capability that will allow it to remotely roll back problematic Windows drivers delivered through Windows Update. Called Cloud-Initiated Driver Recovery, the new feature will remove the need for hardware partners or end users to manually fix driver issues once drivers have been distributed to devices. The recovery process is entirely […]

2 mins read