Tag: zero-day
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Anthropic Just Gave Defenders a Firehose. They’re Already Drowning.
Anthropic announced Project Glasswing last week with the kind of language reserved for genuine inflection points. Claude Mythos Preview, a frontier model the company deliberately chose not to release publicly, had already identified thousands of zero-day vulnerabilities across every major operating system and web browser, including a bug that had been sitting undetected in.. First…
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Anthropic Just Gave Defenders a Firehose. They’re Already Drowning.
Anthropic announced Project Glasswing last week with the kind of language reserved for genuine inflection points. Claude Mythos Preview, a frontier model the company deliberately chose not to release publicly, had already identified thousands of zero-day vulnerabilities across every major operating system and web browser, including a bug that had been sitting undetected in.. First…
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âš¡ Weekly Recap: Fiber Optic Spying, Windows Rootkit, AI Vulnerability Hunting and More
Monday is back, and the weekend’s backlog of chaos is officially hitting the fan. We are tracking a critical zero-day that has been quietly living in your PDFs for months, plus some aggressive state-sponsored meddling in infrastructure that is finally coming to light. It is one of those mornings where the gap between a quiet…
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Simply opening a PDF could trigger this Adobe Reader zero-day
Even though it’s patched, Adobe confirmed it was exploited in the wild, so updating is urgent, not optional. First seen on securityboulevard.com Jump to article: securityboulevard.com/2026/04/simply-opening-a-pdf-could-trigger-this-adobe-reader-zero-day/
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Your MTTD Looks Great. Your Post-Alert Gap Doesn’t
Anthropic restricted its Mythos Preview model last week after it autonomously found and exploited zero-day vulnerabilities in every major operating system and browser. Palo Alto Networks’ Wendi Whitmorewarned that similar capabilities are weeks or months from proliferation. CrowdStrike’s 2026 Global Threat Report puts average eCrime breakout time at 29 minutes. Mandiant’s M-Trends 2026 First seen…
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(g+) DoppelDay bei Forticlient EMS: Eine offene Tür ins Unternehmensnetz
Tags: zero-dayZwei unauthentifizierte Lücken in sechs Wochen, rund 2.000 exponierte Instanzen: Wie Admins Forticlients Management Server jetzt schützen. First seen on golem.de Jump to article: www.golem.de/news/doppel-zero-day-bei-forticlient-ems-eine-offene-tuer-ins-unternehmensnetz-2604-207504.html
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Adobe issues emergency fix for Acrobat Reader flaw exploited in the wild (CVE-2026-34621)
Adobe has pushed out an emergency security update for Adobe Acrobat Reader, patching a zero-day vulnerability (CVE-2026-34621) exploited in the wild since November 2025. About … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/04/13/adobe-acrobat-reader-cve-2026-34621-emergency-fix/
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Notfallupdate: Adobe reagiert auf monatelang ausgenutzte Reader-Lücke
Wer Adobe Acrobat oder den Acrobat Reader nutzt, sollte das PDF-Tool zügig updaten. Nutzer werden seit Ende 2025 über eine Zero-Day-Lücke attackiert. First seen on golem.de Jump to article: www.golem.de/news/dringend-updaten-adobe-patcht-seit-monaten-ausgenutzte-reader-luecke-2604-207484.html
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Notfallupdate: Adobe reagiert auf seit Monaten ausgenutzte Reader-Lücke
Wer Adobe Acrobat oder den Acrobat Reader nutzt, sollte das PDF-Tool zügig updaten. Nutzer werden seit Ende 2025 über eine Zero-Day-Lücke attackiert. First seen on golem.de Jump to article: www.golem.de/news/dringend-updaten-adobe-patcht-seit-monaten-ausgenutzte-reader-luecke-2604-207484.html
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Adobe Fixes Actively Exploited Zero-Day in Acrobat Reader
Adobe has released an emergency security update to address a critical zero-day vulnerability in Acrobat and Reader for Windows and macOS. According to Adobe’s APSB26-43 bulletin, the flaw is currently being exploited in the wild, prompting a Priority 1 rating from the company. Designated as CVE-2026-34621, this vulnerability is an Improperly Controlled Modification of Object…
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Week in review: Windows zero-day exploit leaked, Patch Tuesday forecast
Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: Cloudflare moves up its post-quantum deadline as researchers narrow the path … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/04/12/week-in-review-windows-zero-day-exploit-leaked-patch-tuesday-forecast/
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Saturday Security: AI Could Trigger a Zero-Day Exploit Tsunami
For decades, zero-day vulnerabilities were the cyber equivalent of secret weapons, only nation-states and elite attackers could find and weaponize them. That balance may be gone. On April 7, 2026, Anthropic announced Claude Mythos Preview, an AI model so capable of finding and exploiting vulnerabilities that the company decided it’s too dangerous to… First seen…
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PDF öffnen reicht: Zero-Day-Lücke in Adobe Reader wird seit Monaten ausgenutzt
Angreifer nutzen seit Ende 2025 eine Zero-Day-Lücke in Adobe Reader aus, um Daten abzugreifen und Schadcode einzuschleusen. Ein Forscher schlägt Alarm. First seen on golem.de Jump to article: www.golem.de/news/pdf-oeffnen-reicht-ungepatchte-luecke-in-adobe-reader-seit-monaten-ausgenutzt-2604-207376.html
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PDF öffnen reicht: Zero-Day-Lücke in Adobe Reader wird seit Monaten ausgenutzt
Angreifer nutzen seit Ende 2025 eine Zero-Day-Lücke in Adobe Reader aus, um Daten abzugreifen und Schadcode einzuschleusen. Ein Forscher schlägt Alarm. First seen on golem.de Jump to article: www.golem.de/news/pdf-oeffnen-reicht-ungepatchte-luecke-in-adobe-reader-seit-monaten-ausgenutzt-2604-207376.html
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Project Glasswing Just Made Your Security Playbook Obsolete
Anthropic’s AI Model Exposes How Unprepared Enterprises Are to Respond. Anthropic’s announcement this week of Claude Mythos Preview frontier model capable of finding zero-days flaws humans may miss is both a warning and a call to action for CIOs: The way enterprises have been managing cybersecurity is about to change forever, and they need to…
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Zero-Days, Data Breaches, and AI Risks Define This Week’s Cybersecurity Landscape in 2026
Weekly summary of Cybersecurity Insider newsletters First seen on esecurityplanet.com Jump to article: www.esecurityplanet.com/weekly-roundup/zero-days-data-breaches-and-ai-risks-define-this-weeks-cybersecurity-landscape-in-2026/
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Crushing the Axios supply chain threat with Tenable Hexa AI: Use cases for agentic AI
Tags: ai, attack, business, credentials, crypto, cve, data, data-breach, malicious, moveIT, network, okta, radius, risk, software, supply-chain, threat, update, vulnerability, zero-daySee how you can use Tenable Hexa AI to determine in minutes if you’re impacted by the Axios npm supply chain attack. Learn how easy it is to automate configuration of scans, identify impacted assets, prioritize remediation, and more using agentic AI from Tenable. Key takeaways: Tenable Hexa AI, the agentic engine of the Tenable…
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Crushing the Axios supply chain threat with Tenable Hexa AI: Use cases for agentic AI
Tags: ai, attack, business, credentials, crypto, cve, data, data-breach, malicious, moveIT, network, okta, radius, risk, software, supply-chain, threat, update, vulnerability, zero-daySee how you can use Tenable Hexa AI to determine in minutes if you’re impacted by the Axios npm supply chain attack. Learn how easy it is to automate configuration of scans, identify impacted assets, prioritize remediation, and more using agentic AI from Tenable. Key takeaways: Tenable Hexa AI, the agentic engine of the Tenable…
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Can Anthropic Keep Its Exploit-Writing AI Out of the Wrong Hands?
Its Mythos Preview model, which can allegedly find and exploit critical zero-days, also comes with certain controls, the vendor said. First seen on darkreading.com Jump to article: www.darkreading.com/application-security/anthropic-exploit-writing-mythos-ai-safe
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‘BlueHammer’ Windows Zero-Day Exploit Signals Microsoft Bug Disclosure Issues
Under the alias ‘Chaotic Eclipse,’ a researcher released a PoC exploit for a zero-day flaw that allows for system takeover by a local user, citing an undisclosed beef with Microsoft. First seen on darkreading.com Jump to article: www.darkreading.com/vulnerabilities-threats/bluehammer-windows-exploit-microsoft-bug-disclosure-issues
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Malicious PDF reveals active Adobe Reader zero-day in the wild
Hackers used an Adobe Reader zero-day for months. Researcher Haifei Li found a malicious PDF and asks the community to help analyze it. Hackers used an Adobe Reader zero-day for months to deliver a sophisticated PDF exploit. Cybersecurity researcher Haifei Li, founder of Expmon, discovered the malicious file and warned the community. On March 26,…
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Bug Management in the Mythos Era: ‘Assume You’re Unpatched’
Start Here: Strong Monitoring, Behavior-Based Controls, Virtual Patching Thanks to Anthropic’s Mythos presaging a world in which zero-day exploits are common, one cybersecurity expert says the new mantra is this: assume you are unpatched. Vendors and customers must focus more than ever on strong monitoring, behavior-based controls and virtual patching. First seen on govinfosecurity.com Jump…
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Hackers Exploit Adobe PDF Flaw for Months to Steal Data, No Fix Yet
A critical Adobe Acrobat zero-day has been exploited for months via malicious PDFs to steal data and potentially take over systems, with no patch yet available. The post Hackers Exploit Adobe PDF Flaw for Months to Steal Data, No Fix Yet appeared first on TechRepublic. First seen on techrepublic.com Jump to article: www.techrepublic.com/article/news-adobe-acrobat-zero-day-pdf-exploit-months/
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Adobe Reader Zero-Day Exploited to Steal Data via Malicious PDFs
An Adobe Reader zero-day vulnerability is being actively exploited via malicious PDFs, allowing hackers to steal data without user interaction, with no patch available. First seen on hackread.com Jump to article: hackread.com/adobe-reader-zero-day-exploit-data-malicious-pdfs/
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Adobe Reader Zero-Day Exploited to Steal Data via Malicious PDFs
An Adobe Reader zero-day vulnerability is being actively exploited via malicious PDFs, allowing hackers to steal data without user interaction, with no patch available. First seen on hackread.com Jump to article: hackread.com/adobe-reader-zero-day-exploit-data-malicious-pdfs/
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Adobe Reader Zero-Day Exploited to Steal Data via Malicious PDFs
An Adobe Reader zero-day vulnerability is being actively exploited via malicious PDFs, allowing hackers to steal data without user interaction, with no patch available. First seen on hackread.com Jump to article: hackread.com/adobe-reader-zero-day-exploit-data-malicious-pdfs/
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Zero Days for the Masses: Mythos Presages Exploit Tsunami
Asymmetry Between Exploits Wielded by Nation-States and Hackers Will Disappear. Anthropic’s announcement that its Mythos Preview large language model can find serious zero-day flaws across all manner of code bases old and new, and quickly chain vulnerabilities together to build working exploits, promises to democratize access to such capabilities. First seen on govinfosecurity.com Jump to…
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Adobe Acrobat Reader Zero Day Exploited in Active PDF Attacks
An Adobe Acrobat zero day is being exploited in the wild. First seen on esecurityplanet.com Jump to article: www.esecurityplanet.com/threats/adobe-acrobat-reader-zero-day-exploited-in-active-pdf-attacks/
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Months-old Adobe Reader zero-day uses PDFs to size up targets
Malicious PDFs abuse legit features to harvest system data and decide which victims get a 2nd-stage payload First seen on theregister.com Jump to article: www.theregister.com/2026/04/09/monthsold_adobe_reader_zeroday_uses/