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"Chaotic Eclipse released BigDiskBuster, a POC for Windows Defender DoS Zero-Day."
Views expressed in this cybersecurity, cybercrime update are those of the reporters and correspondents. Accessed on 22 September 2026, 1456 UTC.
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Russ Roberts (https://www.hawaiicybersecurityjournal.net).
41
Today
6 TTPs
by Pierluigi Paganini / 30min
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 Window
5 TTPs
by Pierluigi Paganini / 4h
A Veeam Agent flaw lets local users gain SYSTEM privileges. A public PoC is available, raising the risk of exploitation on shared Windows systems. If you’re running Veeam Agent on a Windows endpoint with more than one local user, now’s the time to check the version, not tomorrow. On September 14, 2026, public technical details and a proof-of-concept exploit dropped for CVE-2026-32996. From that p
Yesterday
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Zyxel flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a Zyxel GS1900 Series Switches flaw, tracked as CVE-2026-7273 (CVSS score of 8.8), to its Known Exploited Vulnerabilities (KEV) catalog . The flaw is a stack-based buffer overflow that could allow attack
North Korea-linked WaterPlum runs the Contagious Interview campaign, infecting over 30,000 devices using a fake job interview. On September 18, Japan’s National Police Agency, the FBI, the US Department of Defense’s Cyber Crime Center, and intelligence agencies from Australia and Germany published a joint advisory about a group called WaterPlum, better known as Contagious Interview . The name say
by Pierluigi Paganini / 17h
Ireland’s DPC fined Google €403 million over GDPR violations involving location data, transparency, retention and user control. Ireland’s Data Protection Commission (DPC) just fined Google €403 million, and the case behind it goes back six years, to a set of complaints that never really went away. The DPC launched the investigation in February 2020 after receiving complaints from several European
Hackers targeted two Colorado water utilities, changing OT settings and disabling alarms, but causing no impact on water services or safety. Foreign hackers targeted the operational technology (OT) systems of two small private water utilities in Colorado in late August, apparently trying to disrupt operations. Local authorities haven’t identified the affected utilities or the attackers. Attackers
Blackpoint uncovers ChainScript, a Node.js RAT that queries a Polygon smart contract to find and rotate its command server. Blackpoint’s Adversary Pursuit Group was chasing a ClickFix campaign spreading an unknown RAT namend ChainScript. The malicious code is a previously undocumented Node.js remote access trojan that hides its command server on a public blockchain. The infection starts with a fa
A BYD Shark 6 was remotely hacked, exposing vehicle controls, location tracking and cabin audio, raising serious connected-car security concerns. A journalist drove a BYD Shark 6 down a country road outside Canberra while a hacker sitting on the shoulder killed the headlights with a keystroke. That’s not a hypothetical. It’s what happened during a two week test by Four Corners and a cybersecurity
Sep 20, 2026
6 TTPs
by Pierluigi Paganini / 1d
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. In my previous piece, I explained how MITRE ATLAS catalogs threats to AI
A 2017 UK assessment warned that police data on Microsoft Azure could face foreign access risks. The risks may still exist. A Guardian investigation has surfaced a 2017 document signed off by then City of London police commissioner Ian Dyson, who also held the title of senior information risk owner for the entire country. That document reviewed 15 risks tied to moving police data onto Microsoft A
3 TTPs
by Pierluigi Paganini / 1d
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Linux Kernel flaws to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added [ 1 , 2 ] the following vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog : CVE-2025-39682 – Linux Kernel Improper Check for Unusual or Exceptional Conditions Vulnerability CVE
An AI-generated intelligence report falsely identified weapons on a Chinese ship, nearly triggering a US military operation during the Iran war. According to CNN, four sources familiar with the episode say an intelligence report circulated through the military claiming a Chinese vessel in the Middle East was carrying components for a nuclear weapons program. The response was immediate. Armed boar
by Pierluigi Paganini / 2d
Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Malware Newsletter Gray Rabbits and the Tale of a One-Click Backdoor Red Heron exploits Gitea n-day flaw in multinational campaign, exposing new Linux rootkit Malicious Twitch Browser Extension Exposes 30,000 Users’ OAuth Tokens to Russian Bot Service Mind the (Pat
Sep 19, 2026
by Pierluigi Paganini / 2d
A new round of the weekly Security Affairs newsletter has arrived! Every week, the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including international press. Google Gemini also Broke Out of Its Test Environment AI Helps Hackers Hijack OpenAI Staff Accounts Through a Forum Brevo Supply-Chain Attack Infected Ov
Google Gemini escaped a cyber test environment, reached three real companies, and exposed why AI security tests need strict isolation. Google has confirmed that one of its Gemini models broke into the systems of three real companies during a cybersecurity test in May. The incident is the first publicly known case in which a Google AI system escaped its test environment and accessed real systems o
AI helped researchers exploit a Discourse flaw in under 72 hours, hijacking OpenAI staff accounts and exposing the risks of shared SSO. Three researchers at Hacktron just took over ChatGPT and Codex accounts belonging to OpenAI staff. The attack did not rely on phishing techniques or a leaked password. Through an image upload on OpenAI’s own help forum. The forum runs on Discourse, and until rece
Sep 18, 2026
A Brevo supply-chain attack used compromised Cloudflare access to inject malware into websites, potentially affecting over 100,000 sites. Brevo, formerly known as Sendinblue, is a French cloud-based marketing and customer communication platform whose clients include eBay, Louis Vuitton and Michelin. The company was first compromised on September 10, when attackers exploited a vulnerability in its
A Gyazo breach exposed 23 million user records after attackers exploited a vulnerability in Helpfeel’s image upload server. Japanese software company Helpfeel is notifying Gyazo users about a data breach that compromised 23 million user records. Attackers gained unauthorized access by exploiting a vulnerability in the service’s image upload server. “We have confirmed that approximately 23.62 mill
IoC > 1 domain
by Pierluigi Paganini / 4d
•Input Capture (Mobile T1417)
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