Windows services Archives

Winsage

July 24, 2026

Microsoft shares some details on Azure outage that blocked Windows 11 update downloads

This week, Meta experienced a global outage affecting Facebook users, followed by Microsoft facing performance issues with its M365 services, including Teams and SharePoint. Microsoft also reported difficulties with Azure, impacting Windows 11 updates and the Microsoft Store. The issues began around 11:15 AM PST on July 23, 2026, with a notification to users about the Azure outage affecting Windows Update and related services. Microsoft initiated recovery efforts and by 1:45 PM PST, announced that the issues were resolved and services were restored. Currently, there are no ongoing issues reported on the Microsoft Service Health Status page, but the incident is documented on the Windows Release Health page.

Winsage

July 12, 2026

Microsoft Confirms Windows GDID Device Identifier That Cannot Be Disabled, Documented in FBI Case Filing

Microsoft has confirmed the existence of the Global Device Identifier (GDID), a unique identifier assigned to Windows installations, in a federal complaint against an alleged member of the Scattered Spider hacking group. The GDID is generated when a Windows system is set up with a Microsoft Account and remains active through various Windows updates. Disabling the GDID could disrupt Windows activation and access to Microsoft Store applications. The GDID is described as "a persistent, device-level identifier designed to uniquely identify an installation of a Windows operating system on a device." It is created during the provisioning of Windows with a Microsoft Account and is stored in the Windows registry under HKCUSOFTWAREMicrosoftIdentityCRLExtendedProperties. The GDID remains persistent through Windows updates but is not retained after a clean reinstall. A single user can possess multiple GDIDs linked through their account, OneDrive, and activation history. The FBI used the GDID to track Peter Stokes, an alleged member of the Scattered Spider group, across various VPN connections and proxy servers. The GDID was recorded visiting specific websites and was linked to Stokes's accounts on platforms like Snapchat and Facebook. Concerns have been raised regarding user privacy, as the GDID is assigned without user consent and cannot be disabled without compromising essential Windows features. Microsoft has not committed to providing user-facing controls or comprehensive documentation for everyday users regarding the GDID. Legal requests can compel Microsoft to disclose GDID activity data to law enforcement. The GDID is linked to the Microsoft Account rather than the device itself, meaning reinstalling the operating system does not sever this connection.

Winsage

July 10, 2026

Microsoft Warns of GigaWiper Backdoor Built to Destroy Windows PCs

Microsoft has unveiled a destructive Windows backdoor named GigaWiper, which allows operators remote control over compromised systems to execute irreversible damage. GigaWiper originated from cyberattacks in October 2025 and is a composite of code from at least three malware families. It maintains its presence through a scheduled task disguised as “OneDrive Update,” executing at startup and every minute. GigaWiper can obliterate partition information, overwrite physical drives, and restart systems. It also mimics ransomware by encrypting files with the .candy extension, using randomly generated keys that are not stored, making recovery impossible. The malware has connections to the Crucio ransomware and resembles FlockWiper, with rewritten code in Go. GigaWiper features 20 command codes for various functions, including executing PowerShell instructions, managing processes, capturing screenshots, and remote access similar to VNC. It can remain on a system for surveillance until its destructive functions are activated. Microsoft Defender includes detection capabilities for GigaWiper, and users are advised to enable tamper protection and monitor for suspicious activities.

Winsage

July 8, 2026

Trojanized LetsVPN installer gives attackers remote access to Windows PCs

A malware campaign has been discovered that exploits the VPN service LetsVPN. Researchers from ThreatLocker found a malicious Windows installer that pretends to be the legitimate LetsVPN application while deploying a remote access trojan (RAT) called GoodPersonRAT. The malware allows attackers to control infected systems using stealth techniques. The malicious installer first deploys the RAT and then installs the authentic LetsVPN application, creating an illusion of legitimacy. The package identified as Kuailian_win-setup.86.msi contains the legitimate LetsVPN installer, a loader, and an encrypted payload. GoodPersonRAT features include remote desktop control, file upload/download, command execution, proxying, keylogging, and clipboard monitoring. It specifically targets Telegram Desktop users by archiving critical account information and altering proxy settings. The malware ensures persistence through Windows services and scheduled tasks and can undermine security software. The LetsVPN installer is legitimate and signed, but the MSI package is unsigned and contains malicious components. Users are advised to download software only from official sources and verify digital signatures.

Tech Optimizer

June 4, 2026

How We Test Antivirus and Security Software

Most software applications clearly indicate their functionality, but the effectiveness of antivirus utilities is often less tangible. PCMag rigorously evaluates antivirus products through comprehensive tests that validate their claims, including real-world malware samples and various protective measures. Each antivirus tool is assessed based on its on-demand scanner and real-time monitor capabilities. PCMag compiles fresh malware samples annually, analyzing them to ensure they are suitable for testing. The testing process includes evaluating malware-blocking capabilities and web-level protection against known malware-hosting sites. Phishing site detection is also tested using recent URLs, and antispam testing has been simplified due to the effectiveness of email providers. Performance impact tests have been discontinued as modern security suites show improved efficiency. Firewall protection is evaluated through program control, exploit defenses, and overall resilience against malware. Parental control features are tested for effectiveness in content filtering and monitoring. Ransomware protection is assessed by releasing real-world samples in a controlled environment. PCMag monitors independent antivirus lab tests from various organizations, including AV-Test, AV-Comparatives, SE Labs, MRG-Effitas, and AVLab, to inform their reviews. An aggregate testing score is calculated to summarize lab results. Testing methodologies do not include VPN evaluations, which are covered separately.

Winsage

May 13, 2026

Microsoft Patch Tuesday for May 2026 — Snort rules and prominent vulnerabilities

Microsoft's May 2026 security update addresses 137 vulnerabilities, with 31 classified as critical. None of these critical vulnerabilities are currently being exploited in active attacks. Sixteen of the critical vulnerabilities involve remote code execution (RCE) issues in Microsoft products, including Microsoft Office, Microsoft Word, and Azure. Specific vulnerabilities include: - CVE-2026-32161: A use-after-free vulnerability in the Windows Native WiFi Miniport Driver. - CVE-2026-40358: A use-after-free vulnerability in Microsoft Office. - CVE-2026-41089: A stack-based buffer overflow in Windows Netlogon. Additional important vulnerabilities flagged include: - CVE-2026-33835: Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability. - CVE-2026-33837: Windows TCP/IP Local Elevation of Privilege Vulnerability. - CVE-2026-35416: Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability. Talos is releasing a new Snort ruleset to detect attempts to exploit these vulnerabilities, and users are advised to update their Cisco Security Firewalls and acquire the latest rule pack via Snort.org.

Winsage

April 9, 2026

BlueHammer: Windows zero-day exploit leaked

A proof-of-concept (PoC) exploit called BlueHammer has been released on GitHub, targeting an unpatched local privilege escalation vulnerability in Windows. The exploit, attributed to users Chaotic Eclipse and Nightmare Eclipse, has been modified by security researchers to work on updated versions of Windows 10, 11, and Windows Server. The exploit manipulates Microsoft Defender to create a Volume Shadow Copy, allowing access to sensitive registry files and enabling the extraction of NTLM password hashes. This facilitates the alteration of a local Administrator's password and subsequent login. The exploit can duplicate the Administrator's security token and create a malicious Windows Service that runs with SYSTEM privileges. While there are no reports of BlueHammer being exploited by malicious actors, researchers warn that such PoC code can be weaponized quickly. Microsoft has committed to investigating reported security issues related to this vulnerability.

Winsage

March 6, 2026

Chinese hackers hide malware in Windows and Google Drive to hit targets

Chinese state-sponsored threat actors, specifically a group known as Silver Dragon, have been conducting espionage operations across Southeast Asia and Europe since at least mid-2024. They have targeted government entities in countries such as Russia, Poland, Hungary, Italy, Japan, Myanmar, and Malaysia. Silver Dragon is believed to be affiliated with APT41 and primarily uses phishing emails to initiate attacks, often containing weaponized documents or links. They employ a custom backdoor called GearDoor, which utilizes Google Drive for command-and-control operations, allowing them to exfiltrate stolen intelligence. The group also hijacks legitimate Windows services to load malicious code and uses tools like SSHcmd and Cobalt Strike for post-exploitation activities. Their tactics involve blending malicious activities with normal system operations, making detection difficult and increasing their dwell time within targeted networks.

Winsage

January 15, 2026

Windows App forgets how to log in with first security update of the year

Microsoft's January security update, released on January 13, 2026, has caused connection and authentication failures for users of Azure Virtual Desktop and Windows 365, particularly affecting those using the Windows App. The update has resulted in credential prompt failures during Remote Desktop connections across all supported Windows versions, from Enterprise LTSC 2016 to Windows 11 25H2, as well as Windows Servers from 2019 to 2025. Microsoft is investigating the issue and plans to release an out-of-band update soon. Users have been advised to either uninstall the update or use the Remote Desktop Client or the Windows App web client as workarounds. Reports indicate persistent issues, including an "Unable to Authenticate" error when attempting to connect via the Windows App. Microsoft has also made a Known Issue Rollback available to address these credential problems.

Tech Optimizer

October 7, 2025

6 Windows hardening steps that don’t break gaming or DRM

Windows 11 is not the most secure operating system by default but offers ways to enhance security without affecting gaming performance. Gaming PCs are vulnerable to cyber threats and should adopt security measures. Customizing Windows Firewall allows users to maintain internet access for gaming applications while ensuring security. Users should add key game executable files to the "allowed apps" list and consider using SimpleWall for better control over network activity. Using a standard account for gaming sessions enhances security by limiting admin account access, which should be reserved for software installation and updates. Implementing multi-factor authentication for both admin and standard user accounts adds an extra layer of security. Windows Defender has improved and can be an efficient antivirus option, but third-party solutions may conflict with gaming performance. Game files should be added to Windows Defender's exclusion list to avoid performance issues. Disabling unnecessary Windows services can enhance security and performance by reducing the attack surface and freeing up resources. Common services to disable include Cellular Time, Connected Devices Platform Service, and Telemetry. Secure Boot protects against malicious software during the boot process and may require BIOS adjustments. It does not affect gaming performance and is often necessary for games with kernel-level anti-cheat systems. Memory Integrity and Core Isolation are advanced security features that protect against low-level attacks by creating an isolated environment for critical processes. These features require minimal resources if the CPU supports Intel's Mode-Based Execution Control (MBEC) or AMD's Guest Mode Execution Trap (GMET). Balancing security measures with optimal system performance is essential for a secure gaming experience.