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Best Free Antivirus Software 2026
Tech Optimizer
August 16, 2026

Best Free Antivirus Software 2026

Over the past decade, free antivirus software has significantly improved, now competing with paid security suites in malware protection. Independent testing from 2026 shows that Avast and AVG have achieved top scores in protection, performance, and usability. Microsoft Defender is a reliable option for Windows users who prefer not to install additional software. The leading free antivirus options in 2026 include Avast Free Antivirus, AVG AntiVirus Free, Microsoft Defender Antivirus, Bitdefender Antivirus Free, Avira Free Security, and Malwarebytes Free. Avast Free Antivirus received perfect scores of 6/6 in protection, performance, and usability from AV-TEST in May and June 2026, totaling 18 out of 18. AVG AntiVirus Free matched these scores and also received an Advanced+ rating from AV-Comparatives. Microsoft Defender scored 6/6 in protection, 5.5/6 in performance, and 6/6 in usability, totaling 17.5 out of 18. Bitdefender Antivirus Free is recognized for its lightweight protection, while Avira Free Security offers additional utilities. Malwarebytes Free is noted for its effectiveness in malware removal. Antivirus software is essential in the current cybersecurity landscape, which includes threats like ransomware and phishing attacks. In 2025, the FTC reported approximately .8 billion in fraud losses, a 25% increase from the previous year. While antivirus software cannot eliminate all forms of online fraud, it plays a crucial role in preventing attacks from escalating to data theft or system compromise. Users should be cautious of counterfeit antivirus software and are advised to download programs from official vendor websites. Free antivirus solutions generally focus on malware detection, while paid options offer additional services. For Windows 11 users, Avast Free Antivirus, AVG AntiVirus Free, and Microsoft Defender are recommended options based on 2026 evaluations.
LeakWatch CW 33/2026: Windows Zero-Day, AMD, Intel and Malware
Winsage
August 16, 2026

LeakWatch CW 33/2026: Windows Zero-Day, AMD, Intel and Malware

- The August Patch Tuesday release included 421 vulnerabilities, with 236 affecting Windows, highlighting CVE-2026-68820, a critical use-after-free vulnerability that allows privilege escalation to SYSTEM level without user interaction. - CISA added CVE-2026-68820 to its Known Exploited Vulnerabilities Catalog, confirming its active exploitation. - AMD's Ryzen Master software has vulnerabilities, including CVE-2025-54512 (DLL hijacking) and CVE-2026-0465 (use-after-free), which could allow code execution with elevated privileges. - AMD's advisory on CVE-2026-6726 and CVE-2026-6727 indicates vulnerabilities in the TPM 2.0 reference code affecting Ryzen platforms, leading to potential information disclosure. - Intel's advisories included updates for microcode, Wi-Fi software, and NPU drivers, with CVE-2026-20760 addressing privilege escalation risks. - Google’s Chrome update on August 11 fixed five high-severity vulnerabilities, including use-after-free flaws. - Gunra malware has evolved into a ransomware-as-a-service model using a double-extortion strategy. - WindRelay malware combines SpyNote RAT with an NFC relay component, allowing attackers to relay NFC communication between a victim's bank card and a remote device. - The findings emphasize the need to view vulnerabilities as part of potential attack chains, highlighting the complexity of modern cybersecurity threats.
'This one just needs a script': Researchers find ultimate Windows kill switch which can disable antivirus with almost no user interaction
Tech Optimizer
August 14, 2026

‘This one just needs a script’: Researchers find ultimate Windows kill switch which can disable antivirus with almost no user interaction

Researchers have identified a significant vulnerability in consumer DDR4 and DDR5 memory modules, known as the “Download more RAM” flaw, which allows attackers to bypass advanced Windows security features, including Virtualization-Based Security (VBS) and Hypervisor Code Integrity (HVCI). This vulnerability enables the manipulation of configuration reports from RAM, misleading the system about its actual memory capacity, which can disable antivirus protections and allow the reintroduction of outdated drivers. The exploit can be executed via a single-click script, leading to security failures. Microsoft has released a patch for CVE‑2026‑23670 to enhance memory write protection against such exploits.
Hands-on with AltTabby, Stardock's replacement for the Windows 11 Alt+Tab experience
Winsage
August 13, 2026

Hands-on with AltTabby, Stardock’s replacement for the Windows 11 Alt+Tab experience

Stardock has introduced AltTabby, an alternative app switcher for Windows 11 that features customizable layouts, smart grouping, application pinning, and keyboard shortcuts. It integrates with other Stardock utilities, allowing users to customize how Groupy organizes applications. AltTabby offers five distinct views, with the carousel view being highlighted for its fluid navigation and customization options. The icons view and classic icons view are noted to be compact and potentially overwhelming, though the icons view includes a search box for added functionality.
Microsoft's August update fixes a Windows flaw that's already being attacked
Winsage
August 13, 2026

Microsoft’s August update fixes a Windows flaw that’s already being attacked

The upcoming Patch Tuesday is scheduled for September 8th, 2026, during which Microsoft will address over 200 vulnerabilities across Windows platforms, including Windows 10, Windows 11, and Windows Server. Windows 10 users in the Extended Security Updates (ESU) program will receive updates until October 2027. Among the vulnerabilities, CVE-2026-68820 allows attackers to gain elevated privileges through the Windows auxiliary function driver for Winsock. Microsoft has identified 18 vulnerabilities as critical, including CVE-2026-62878, an RCE vulnerability in the Windows DNS server that can lead to a buffer overflow and code execution without user interaction. Another critical issue is CVE-2026-62893, a UAF vulnerability in the TFTP server of Windows Deployment Services, which allows code injection through UDP port 69. Additionally, CVE-2026-62815, an RCE vulnerability in Quick UDP Internet Connections (QUIC), permits code execution without user interaction, while CVE-2026-59124, although high risk, is not classified as critical due to the HPC Pack not being enabled by default.
Microsoft fixes 421 bugs and a Windows zero-day in August Patch Tuesday
Winsage
August 12, 2026

Microsoft fixes 421 bugs and a Windows zero-day in August Patch Tuesday

Microsoft's August Patch Tuesday update addressed 421 vulnerabilities across various products, including multiple versions of Windows (11 25H2/24H2, 11 23H2, and 10). A critical zero-day flaw, the "Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability," allows attackers with lower-level access to gain system privileges without user interaction. Additionally, the update addresses two other zero-day flaws, including the "Windows User Profile Service Elevation of Privilege Vulnerability," which has not yet been exploited but was publicly disclosed. The update is mandatory and should automatically install on supported PCs, with users encouraged to verify its application. The update also includes minor improvements to Windows features, such as enhancements to File Explorer, Windows Hello, Voice Access, and touchpad controls.
Google is replacing one of its most popular apps
AppWizard
August 5, 2026

Google is replacing one of its most popular apps

Google is phasing out the Google Assistant app and transitioning users to its new AI-powered assistant, Gemini. Notifications have been sent to users about the discontinuation, which will begin on September 4 and take several weeks to complete. Devices that meet system requirements and are in supported regions will automatically switch to Gemini, allowing users to use familiar commands. The transition will also impact other connected devices like smartwatches and wireless earphones. Gemini aims to replicate the capabilities of Assistant while offering a more natural conversational experience.
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