2026-09-22 16:14 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-22 17:55 UTC
A zero-day proof-of-concept tool that stops Microsoft Defender from installing platform and signature updates by filling all available disk space was published on GitHub on September 19. The tool, called BigDiskBuster, has no patch, no CVE, and no Microsoft advisory. Its author, Abdelhamid Naceri, is a former Microsoft security researcher whose earlier Defender exploits were used in
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2026-09-22 14:04 UTC
Other
Security Affairs · Pierluigi Paganini · indexed 2026-09-22 14:10 UTC
The researcher Chaotic Eclipse released BigDiskBuster, a PoC exploit for a Windows Defender Update DoS Zero-Day vulnerability. Security researcher Chaotic Eclipse, also known as INFINITE NIGHTMARE, MSNightmare and Nightmare-Eclipse, released a new zero-day exploit targeting Microsoft Defender. The researcher named the exploit BigDiskBuster, it triggers a Denial of Service Vulnerability in Windows Defender Update. The security researcher […]
P25
2026-09-22 11:17 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-22 12:10 UTC
A SharePoint Server vulnerability that Microsoft initially classified as a spoofing flaw with a CVSS score of 6.5 actually enables authenticated remote code execution, according to full technical details published today by Viettel Cyber Security researcher Dinh Ho Anh Khoa. The flaw, CVE-2026-65660, affects SharePoint Server 2016, 2019, and Subscription Edition. Patches have been
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2026-09-22 09:55 UTC
Security Journalism
BleepingComputer · Sergiu Gatlan · indexed 2026-09-22 10:15 UTC
Over the weekend, security researcher Abdelhamid Naceri (also known as Nightmare Eclipse) released another Microsoft Defender zero-day exploit that blocks antivirus updates. [...]
P25
2026-09-22 06:33 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-22 06:55 UTC
Malware already running on a Mac can quietly take over Meta's Muse assistant and use the broad access its owner granted the app, security researcher Patrick Wardle has shown in a proof-of-concept released on September 21. It works by changing a hidden setting so that when the user taps the microphone and dictates a prompt, the words go to the attacker instead of Meta. The flaw is in
P0
2026-09-21 14:15 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-21 14:45 UTC
Cybersecurity researchers have disclosed details of a new campaign dubbed TASK#STOMP that delivers a PowerShell backdoor designed to harvest sensitive data from compromised hosts. The backdoor "automatically harvests and exfiltrates business documents, watches the filesystem for new files in real time, steals Wi-Fi passwords and clipboard contents, takes screenshots, and accepts arbitrary
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2026-09-21 10:33 UTC
Community
SANS Internet Storm Center · indexed 2026-09-21 10:30 UTC
Microsoft Security Research published an interesting blog post "TerminalFix campaign deploys a reverse tunnel through multistage intrusion" about a malware campaign. The aspect that I want to take a closer look at, is the fact that the threat actors used PNG files with steganography. I reached out to the researchers and they kindly shared the IOCs for the PNG files with me.
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2026-09-21 08:27 UTC
Other
Security Affairs · Pierluigi Paganini · indexed 2026-09-21 09:25 UTC
AI agents are becoming the new attack surface, exposed to poisoned skills, prompt injection, jailbreaks and attacks through connected tools. I read the AI security research published in a single month, February 2026, and when you put it all together, it’s not a list of curiosities. It’s a field guide to a new attack surface. […]
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2026-09-19 18:36 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-19 11:30 UTC
Three researchers at the security firm Hacktron used Anthropic's Claude Opus 5 to chain two flaws and take over the ChatGPT and Codex accounts of several OpenAI employees, then reach an internal OpenAI code repository. The chain began with a bug in the software that runs OpenAI's public help forum and moved through a weakness in OpenAI's own login system. This was security research,
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2026-09-18 18:02 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-18 20:25 UTC
A security researcher has released working exploit code for four Linux kernel flaws that each let a local user gain root, the highest level of access on a machine. Kernel maintainers have fixed all four over the past few weeks, so a system running an up-to-date kernel is not affected. But the exploit code is now public, and any machine still running an older kernel should be updated. The flaws
P0
2026-09-18 10:40 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-18 11:00 UTC
Cybersecurity researchers have discovered a cluster of 13 npm packages that have been found to deliver a previously undocumented JavaScript stealer codenamed WeaselBiscuit. The new malware family, per OpenSourceMalware, exhibits functional overlaps with two malware strains associated with the Democratic People's Republic of Korea's (DPRK) Contagious Interview campaign: BeaverTail and
P0
2026-09-18 06:17 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-18 06:30 UTC
Cybersecurity researchers have flagged a new Android malware called RatHat that's assessed to be operated by China-based threat actors and features an artificial intelligence (AI)-powered system to navigate and control compromised devices. "Distributed primarily via targeted smishing (SMS/text phishing) and malvertising campaigns leading to deceptive third-party download portals, RatHat uses
P0
2026-09-17 10:05 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-17 13:45 UTC
The China-aligned state-sponsored threat actor known as FamousSparrow has been observed deploying a previously unreported backdoor called SparroWocky in attacks targeting multiple countries in Latin America since at least August 2025. "SparroWocky is a modular, C++ backdoor," ESET security researchers Alexandre Côté Cyr and Romain Dumont said in a technical report shared with The Hacker News
P0
2026-09-16 14:36 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-16 16:25 UTC
Security researchers at Forever Security have shown that one ordinary browser extension could take control of the AI assistants built into five Chromium-based products: Gemini Live in Chrome, Perplexity Comet, Microsoft Edge, Opera Neon and the Claude in Chrome extension. Once the extension was installed, it could access each product's built-in AI with a single click. On Comet, Edge,
P0
2026-09-15 18:54 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-15 19:10 UTC
Cybersecurity researchers have shed light on a previously undocumented Brazilian banking malware operation that delivers a toolkit called KREMLIN. Elastic Security Labs is tracking the activity under the moniker REF9334. Active since at least May 2025, the threat actor has used lures that impersonate a dozen Brazilian banks and install a malicious browser extension on Google Chrome and
P0
2026-09-15 15:23 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-15 15:50 UTC
Cybersecurity researchers have disclosed details of a multi-platform campaign that uses the Message Queueing Telemetry Transport (MQTT) protocol as a communication channel to control Windows and Linux systems. The emerging malware family, codenamed BambooToken, is assessed to be active since at least February 2023 and put to use in attacks targeting organizations across Asia and South America.
P0
2026-09-15 11:12 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-15 12:25 UTC
Cybersecurity researchers have disclosed details of a mass-scanning campaign that has targeted Vite deployments siphon sensitive data. The first is an automated effort aimed at internet-exposed Vite development servers that's designed to steal cloud credentials, configurations from Amazon Web Services (AWS) and Microsoft Azure instances, and infrastructure state files, per F5 Labs. The
P0
2026-09-15 07:48 UTC
Other
Security Affairs · Pierluigi Paganini · indexed 2026-09-15 09:00 UTC
A Telegram Desktop flaw let bots inject JavaScript into exported chats, enabling data theft and page manipulation. Old HTML exports remain unsafe. A vulnerability in Telegram Desktop could have turned an ordinary chat export into a serious data leak. Security researchers Denis and Aleksander Rostilov of ExPatch found a stored cross-site scripting flaw in the […]
P0
2026-09-14 17:58 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-14 19:45 UTC
A flaw in Telegram Desktop let a bot's message plant hidden JavaScript inside chats that users exported to HTML files, security researchers at ExPatch said in a writeup published on September 12. In Telegram, the message looked ordinary, with a link button, and the script ran only when someone opened the export file in a web browser. It could then copy every message in that file to
P0
2026-09-09 07:53 UTC
Other
Security Affairs · Pierluigi Paganini · indexed 2026-09-09 08:30 UTC
The researcher Chaotic Eclipse released ShieldCrash, a PoC exploit for a Microsoft Defender Zero-Day vulnerability. Security researcher Chaotic Eclipse, also known as INFINITE NIGHTMARE, MSNightmare and Nightmare-Eclipse, released a new zero-day exploit targeting Microsoft Defender. The researcher named the exploit ShieldCrash, it triggers an arbitrary file read as SYSTEM. The researcher claims that Microsoft has not fully […]
P25
2026-09-09 07:30 UTC
Security Journalism
BleepingComputer · Sergiu Gatlan · indexed 2026-09-09 07:50 UTC
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. [...]
P30
2026-09-09 06:47 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-09 09:30 UTC
The security researcher known as Chaotic Eclipse has dropped a proof-of-concept (PoC) for yet another zero-day in Microsoft Defender. The vulnerability, codenamed ShieldCrash, is assessed to be a patch bypass for CVE-2026-69414 (CVSS score: 7.8), also called ShieldBreak, which the researcher reported last month. "Microsoft has failed to properly patch ShieldBreak CVE-2026-69414," Chaotic
P30
2026-09-08 14:19 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-08 15:20 UTC
Check Point Research said in a report published today that a single instruction planted in a ChatGPT conversation could cause ChatGPT to quietly work for an attacker while answering the user's question as usual. In the company's proof of concept, that hidden work read data from the user's connected Gmail account and passed it to a second ChatGPT account through a hidden channel
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2026-09-08 11:01 UTC
Vendor Research
Rapid7 · Stephen Fewer · indexed 2026-09-08 12:25 UTC
OverviewWhile conducting research into a recent N-able N-central authentication bypass vulnerability (CVE-2026-18577), Rapid7 Labs discovered two new vulnerabilities affecting the latest version of N-central. When chained together, these two vulnerabilities allow a remote unauthenticated attacker to bypass authentication and create a new attacker-controlled System administrator account on an affected server.CVE IDDescriptionCWECVSSv4CVE-2026-86206Semicolon/Forwarded access-control bypassCWE-791…
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2026-09-08 08:43 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-08 10:00 UTC
Cybersecurity researchers have disclosed details of a sprawling search engine optimization (SEO) poisoning campaign that paves the way for malware deployment and tech support scams. The campaign, discovered by the DFIR Report in March 2026, has been codenamed BengalSEO. It has operated out of the Indian state of Rajasthan since at least 2015, driven by two IT service providers named WeConnect
P0
2026-09-07 18:12 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-07 18:40 UTC
Cybersecurity researchers have disclosed details of a complex Chromium-based post-exploitation toolkit called PEEP that masquerades as a bookmarks extension for the web browser. "Requiring prior administrative or code execution access, its installer injects the extension directly into Chrome/Edge profiles, bypassing Web Store checks and user prompts by forging Chromium's own Secure Preferences
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2026-09-07 13:42 UTC
Other
Security Affairs · Pierluigi Paganini · indexed 2026-09-09 08:30 UTC
Chaotic Eclipse released GreenSection, a PoC exploit for an Nvidia Memory Corruption Zero-Day Security researcher Chaotic Eclipse, also known as INFINITE NIGHTMARE, MSNightmare and Nightmare-Eclipse, released a new zero-day exploit targeting Nvidia. The researcher named the exploit GreenSection, it triggers a Memory Corruption flaw. The researcher disclosed a potential security vulnerability in NVIDIA’s Windows user-mode components. […]
P25
2026-09-07 13:42 UTC
Other
Security Affairs · Pierluigi Paganini · indexed 2026-09-07 14:40 UTC
Chaotic Eclipse released GreenSection, a PoC exploit for an Nvidia GreenSection Memory Corruption Zero-Day Security researcher Chaotic Eclipse, also known as INFINITE NIGHTMARE, MSNightmare and Nightmare-Eclipse, released a new zero-day exploit targeting Nvidia. The researcher named the exploit GreenSection, it triggers a Memory Corruption flaw. The researcher disclosed a potential security vulnerability in NVIDIA’s Windows user-mode […]
P25
2026-09-07 11:36 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-07 13:00 UTC
Cybersecurity researchers have disclosed details of worm-like activity that abuses ConnectWise ScreenConnect to distribute a malicious Visual Basic Script (VBScript) payload to newly connected systems. According to Huntress, three unrelated incidents have been found to use diverse initial access methods, namely a Quick Assist tech-support scam, a phishing-delivered MSI installer, and a fake
P0
2026-09-07 07:53 UTC
Security Journalism
The Hacker News · info@thehackernews.com (The Hacker News) · indexed 2026-09-07 08:35 UTC
Cybersecurity researchers have unpacked JSCeal, a sophisticated compiled V8 JavaScript (JSC) malware with credential harvesting, surveillance, and traffic-interception capabilities. "The payloads are protected with javascript-obfuscator, using multiple techniques including RC4-protected strings, control-flow flattening, proxy functions, and operation wrappers," Check Point Research said in a
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