New Windows Defender zero-day blocks Microsoft antivirus updates
Over the weekend, security researcher Abdelhamid Naceri (also known as Nightmare Eclipse) released another Microsoft Defender zero-day exploit that blocks antivirus updates.
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Microsoft Addresses Incorrect Defender Antivirus Alerts and Other Security Issues
Microsoft resolves incorrect Defender Antivirus alerts and other security bugs, including issues with email threats and file backups.
New Microsoft Defender 'ShieldCrash' zero-day grants SYSTEM access
An anonymous security researcher known as Nightmare Eclipse has released a new Microsoft Defender zero-day exploit named "ShieldCrash" right after Microsoft rolled out its September 2026 Patch Tuesday security updates.
Microsoft Defender flags legitimate Google search links as malicious
Microsoft is investigating an issue causing the Defender for Office 365 security software to mistakenly block access to legitimate Google search links.
AI Is Accelerating Vulnerability Discovery. Can Defenders Keep Up?
AI is accelerating vulnerability discovery, putting pressure on systems built to enrich, prioritize, and remediate flaws at a slower pace.
Microsoft fixes known issue causing Windows Defender crashes
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.
Microsoft working on Defender patch for ShieldBreak zero-day
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.
New Microsoft Defender 'ShieldBreak' zero-day grants SYSTEM privileges
Nightmare Eclipse has released a new Microsoft Defender zero-day exploit named "ShieldBreak" after Microsoft released the August 2026 Patch Tuesday security updates.
Microsoft patches RoguePlanet Defender zero-day vulnerability
Microsoft has released a security patch to address a Defender zero-day vulnerability known as "RoguePlanet," disclosed after the June 2026 Patch Tuesday.
Bitdefender VPN Review: A Solid, Affordable Solution for Everyday Users
Bitdefender's VPN service offers a competitive first-year price and a user-friendly interface, though it lacks some advanced features and doesn't support Linux or smart TVs.
Webinar: How attackers bypass MFA and how defenders can respond
Modern phishing attacks, including Device Code phishing, can undermine MFA protections and grant attackers access to corporate accounts without stealing passwords.
Microsoft working on Defender patch for RoguePlanet zero-day
Microsoft confirmed that it's working on a security patch for a Defender zero-day vulnerability named "RoguePlanet," disclosed one week ago.
Microsoft Defender 'RoguePlanet' zero-day grants SYSTEM privileges
Resumo da fonte BleepingComputer sobre Microsoft, Security: Microsoft Defender 'RoguePlanet' zero-day grants SYSTEM privileges.
Ransomware protection in Windows Defender: deployment guide
A practical, in-depth guide on Ransomware protection in Windows Defender: deployment guide with concrete technical steps, security configurations and verificat.
Ransomware protection in Windows Defender: security checklist
A practical, in-depth guide on Ransomware protection in Windows Defender: security checklist with concrete technical steps, security configurations and verific.
Ransomware protection in Windows Defender: maintenance routine
A practical, in-depth guide on Ransomware protection in Windows Defender: maintenance routine with concrete technical steps, security configurations and verifi.
Ransomware protection in Windows Defender: step-by-step diagnosis
A practical, in-depth guide on Ransomware protection in Windows Defender: step-by-step diagnosis with concrete technical steps, security configurations and ver.
Ransomware protection in Windows Defender: productive use and automation
A practical, in-depth guide on Ransomware protection in Windows Defender: productive use and automation with concrete technical steps, security configurations.
Microsoft Defender's Automatic Endpoint Isolation: A Comprehensive Guide
Microsoft Defender now automatically isolates compromised endpoints to prevent lateral network movement, enhancing security and reducing impact of attacks.
Grok's AI-Generated Odyssey: A Critique of Musk's Claims
Grok Imagine's AI-generated adaptation of Homer's epic, 'The Odyssey,' fails to meet historical accuracy standards, as revealed by the AI itself.
How Criminal Hackers Are Evading AI Guardrails: A Comprehensive Guide
As AI adoption spreads, even unsophisticated cybercriminals are incorporating AI into their operations. This guide explores how they bypass AI safeguards and provides actionable tips for defenders.
SafePay Ransomware: A Comprehensive Guide to Protection and Prevention
CISA reports that SafePay ransomware has breached over 600 critical infrastructure organizations worldwide. This guide offers actionable tips and recommendations to protect against and respond to SafePay attacks.
UK Legal Aid Agency Data Breach: A Decades-Long Exposure
UK Legal Aid Agency data breach exposes sensitive records from 1978 to 2025, highlighting the importance of robust cybersecurity measures.
Microsoft Teams Expands Security Features with Third-Party Deepfake Detection and Impersonation Protection
Microsoft Teams to incorporate third-party deepfake detection and impersonation protection features, enhancing security for users.
Microsoft says threat actors are ahead in the early AI race
Microsoft says cyberattackers are currently benefiting from artificial intelligence faster than defenders, allowing threat actors to speed up vulnerability discovery, malware development, and post-compromise activity while security teams.
The Data Center Backlash and the Climate Reckoning
Data center defenders face a climate crisis, with protests and concerns about emissions and energy use dominating the conversation.
What Zero-Day Response Should Be in the Post-Mythos Era
AI is shrinking the time between vulnerability disclosure and exploitation, leaving defenders less time to wait for patches or public exploits.
Cybercriminal Operation Exploits Hacked Websites for Blockchain-Based Malware Delivery
Over 5,400 hacked sites serve ClickFix payloads stored on the BNB Smart Chain, highlighting the vulnerability of small businesses to cyberattacks.
Your Employee’s Password Appeared in an Infostealer Log. Now What?
Infostealers can expose far more than passwords, including authenticated sessions that may let attackers bypass MFA.
Microsoft Exchange Online Outage: Impact, Analysis, and Mitigation Strategies
Microsoft Exchange Online outage causes severe email and authentication issues, impacting multiple services. Detailed analysis and mitigation strategies.