Tag: microsoft defender
34 articles
Zero-Day Tool Blocks Microsoft Defender Updates
Meet BigDiskBuster, a newly released zero-day tool that cleverly blocks Microsoft Defender updates by maxing out disk space, leaving users vulnerable until a fix is found. Its creator, Abdelhamid Naceri, a former Microsoft security researcher, has made the proof-of-concept tool publicly available on GitHub.
NightmareEclipse Exploits Microsoft Defender Update Process
Meet BigDiskBuster, a clever tool created by NightmareEclipse that cleverly blocks Microsoft Defender updates, leaving you stuck with your current version if it's running in the background. This proof-of-concept has been designed to prevent platform and security intelligence updates from installing.
Microsoft Defender Zero-Day Blocks Antivirus Updates
A security researcher just released a clever tool called BigDiskBuster that can block Microsoft Defender updates, leaving your antivirus stuck in limbo. This sneaky proof-of-concept allows anyone to prevent Defender from getting the latest signature and platform updates, as long as the tool is running in the background.
Microsoft Defender Exposed to New Zero-Day Exploit
A security researcher known as Nightmare Eclipse has just dropped a proof-of-concept exploit for a new Microsoft Defender zero-day vulnerability, dubbed ShieldCrash, which surprisingly still works on Windows systems that have already applied the latest September patches. This marks the researcher's 11th Microsoft zero-day exploit to be made public.
Microsoft Defender Exposes New Zero-Day Vulnerability
A security researcher has uncovered a new zero-day vulnerability, dubbed ShieldCrash, which exposes a gaping hole in Microsoft Defender's patch for CVE-2026-69414, leaving all supported Windows versions open to attack. This shocking exploit allows hackers to read arbitrary files with SYSTEM privileges, putting even the most secure systems at risk.
Microsoft Defender Zero-Day Exploited to Grant SYSTEM Access
A new zero-day exploit called "ShieldCrash" has been published by an anonymous researcher, granting SYSTEM-level access to affected Microsoft Defender systems. This alarming vulnerability comes hot on the heels of Microsoft's September 2026 Patch Tuesday security updates.
Malware Modules Disable Windows Update, Defender for Crypto Mining
Meet LockAppHost, a notorious malware module that cripples your Windows defenses by disabling updates and Microsoft Defender, making way for a sneaky cryptocurrency miner to take over. By weakening your machine's security, it allows the miner to run undetected, wreaking havoc on your system.
Microsoft Defender mistakenly targets Google search links
Microsoft Defender for Office 365's Safe Links feature has mistakenly flagged Google search links as malicious, blocking users from accessing legitimate search results. This faulty security classification is currently preventing users from opening harmless links.
Microsoft Disregards Defender Alerts as False Positives
If you've recently updated Microsoft Defender Antivirus, you might be seeing annoying false alarms claiming it's turned off - but don't worry, it's still working hard to protect you. These pesky alerts are affecting all supported Windows versions, including Windows 11 26H1 and Windows Server 2025.
Microsoft Defender Driver Exploited to Disable Security Software
Researchers at Check Point have uncovered a technique that exploits Microsoft Defender's own driver to disable security software, leaving Windows 7 to 11 users vulnerable to attack. This clever hack requires no external driver or software vulnerability, making it a worrying threat.
Signed Drivers Exposed to Abuse Microsoft Defender Driver Repurposed $10 Million Reward Offered AI Model Exploits Vulnerabilities RCE Flaws Discovered in Gogs, n8n
In a stunning example of old-school ingenuity, a team of investigators finally thwarted a sophisticated espionage campaign by doing something remarkably low-tech: cutting a cable to a compromised router in a Chicago data center. This bold move brought an end to months of digital detective work that had been stymied by the elusive threat actors.
Microsoft Scrambles to Patch Defender Zero-Day Exploited in Wild
Microsoft is racing against the clock to patch a zero-day vulnerability in Defender, known as ShieldBreak, that's being exploited in the wild. The tech giant is working on a high-quality security update to address the elevation of privilege issue in the Microsoft Malware Protection Engine.
Microsoft Defender Zero-Day Exploited to Gain System Privileges
A security researcher known as Nightmare Eclipse has unveiled a new exploit, ShieldBreak, which can bypass Microsoft's patch for the RoguePlanet vulnerability and grant SYSTEM privileges on fully patched Windows systems. This alarming development highlights a significant gap in Microsoft Defender's defenses, leaving users vulnerable to potential attacks.
Microsoft Defender Faces ShieldBreak Exploit With SYSTEM Access
A security researcher known as Chaotic Eclipse has unleashed a powerful proof-of-concept exploit called ShieldBreak, which cleverly bypasses Microsoft's patch for the RoguePlanet vulnerability, granting SYSTEM-level access. This devastating exploit has been tested on the latest Windows 11 and Server 2025 with a 100% success rate.
HollowFrame Loader Evades Defender with Fake Python DLL Tactic
Clever attackers have found a way to slip past Microsoft Defender by using a fake Python DLL, effectively creating a trusted execution lane that evades detection. They set the stage for this trick by first gaining elevated access through a sneaky spear-phishing link.
Microsoft Defender for Endpoint update cripples Linux protection
A recent update to Microsoft Defender for Endpoint has caused a major hiccup, crippling Linux protection and potentially leaving some devices vulnerable. The issue affects specific Linux versions, and a simple upgrade or reinstall followed by a reboot could be the culprit behind a disabled Defender service.
Microsoft Fixes Defender Flaw That Exposes Systems to SYSTEM Privileges
Microsoft has patched a critical flaw in its Defender software, known as RoguePlanet, that could have allowed hackers to gain SYSTEM privileges and take control of vulnerable systems. The vulnerability, tracked as CVE-2026-50656, has been fixed with the latest security updates.
Microsoft Fixes RoguePlanet Zero-Day Flaw in Defender Update
Microsoft has swiftly patched a high-risk zero-day flaw in Defender, known as RoguePlanet, that could have allowed hackers to gain SYSTEM privileges and take control of your device. This critical update fixes the vulnerability, CVE-2026-50656, and ensures your Defender is now better equipped to protect you from potential attacks.
Ransomware gangs exploit Windows BlueHammer flaw
Ransomware gangs are actively exploiting a critical Microsoft Defender flaw, nicknamed BlueHammer, which has been added to CISA's list of Known Exploited Vulnerabilities. This vulnerability is a prime target for malicious cyber actors, posing a significant risk to those who haven't yet applied the necessary patches.
Malicious Chrome Extension Exploits Search Functionality for Data Interception
A malicious Chrome extension, masquerading as a popular AI search engine, was discovered to be secretly logging users' searches and address bar inputs, with Microsoft confirming that the data collection was no accident. The extension, since removed by Google, cleverly disguised itself as a legitimate tool, routing queries through an attacker-controlled server.
Microsoft Tackles RoguePlanet Defender Flaw with Imminent Patch
Microsoft is working on a patch to fix a serious security flaw in Microsoft Defender, known as RoguePlanet, which could allow hackers to gain elevated privileges on affected systems. A high-quality security update is imminent to address this vulnerability and protect users.
Microsoft Scrambles to Patch RoguePlanet Zero-Day in Defender
Microsoft is racing against the clock to fix a critical vulnerability in Defender, known as RoguePlanet, after a proof-of-concept exploit was released, allowing hackers to elevate privileges regardless of real-time protection settings. A patch is in the works, but no release date has been given.
Windows Junctions Expose Hidden Malware Paths
Malware creators have found a sneaky way to evade detection by using NTFS junctions, a feature that's normally used to connect directories, to create hidden paths that can bypass security defenses like Microsoft Defender. By exploiting this vulnerability, attackers can cleverly disguise their malware's true location, making it harder to detect.
Disgruntled Bug Hunter Exposes New Windows 0-Day Vulnerability
A disgruntled bug hunter, known as Nightmare Eclipse, has revealed a new zero-day vulnerability called RoguePlanet, which can give attackers SYSTEM-level control over fully patched Windows 10 and 11 systems. The exploit, fueled by a grudge against Microsoft, targets a weakness in Windows Defender.