Tag: zero-day
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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/
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ThreatsDay Bulletin: Hybrid P2P Botnet, 13-Year-Old Apache RCE and 18 More Stories
Thursday. Another week, another batch of things that probably should’ve been caught sooner but weren’t.This one’s got some range, old vulnerabilities getting new life, a few “why was that even possible” moments, attackers leaning on platforms and tools you’d normally trust without thinking twice. Quiet escalations more than loud zero-days, but the kind that matter…
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Acrobat Reader zero-day exploited in the wild for many months
Unknown attackers have exploited a zero-day Adobe Acrobat Reader vulnerability since November 2025 and possibly even earlier, security researcher Haifei Li has discovered. PDF … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/04/09/acrobat-reader-zero-day-exploited/
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Acrobat Reader zero-day exploited in the wild for many months
Unknown attackers have exploited a zero-day Adobe Acrobat Reader vulnerability since November 2025 and possibly even earlier, security researcher Haifei Li has discovered. PDF … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/04/09/acrobat-reader-zero-day-exploited/
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Acrobat Reader zero-day exploited in the wild for many months
Unknown attackers have exploited a zero-day Adobe Acrobat Reader vulnerability since November 2025 and possibly even earlier, security researcher Haifei Li has discovered. PDF … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/04/09/acrobat-reader-zero-day-exploited/
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Adobe Reader Zero-Day Exploited via Malicious PDFs Since December 2025
Threat actors have been exploiting a previously unknown zero-day vulnerability in Adobe Reader using maliciously crafted PDF documents since at least December 2025.The finding, detailed by EXPMON’s Haifei Li, has been described as a highly-sophisticated PDF exploit. The artifact (“Invoice540.pdf”) first appeared on the VirusTotal platform on November 28, 2025. A second First seen on…
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PDF öffnen reicht: Zero-Day-Lücke in Adobe Reader seit Monaten unter Beschuss
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: Ungepatchte Lücke in Adobe Reader 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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Weak at the seams
Tags: advisory, ai, attack, automation, business, cloud, compliance, control, crowdstrike, cybersecurity, data, data-breach, endpoint, exploit, finance, firewall, framework, healthcare, infrastructure, insurance, Internet, network, resilience, risk, service, supply-chain, technology, tool, update, vulnerability, windows, zero-dayThe normal choices are the dangerous ones: Consider the stack a typical large enterprise was running in 2024: One vendor for ERP and supply chain, another for perimeter enforcement, another for networking and another for endpoint protection. Standard choices, responsibly made. Within a twelve-month window, each of those categories experienced significant disruptions, from zero-day exploits…
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Weak at the seams
Tags: advisory, ai, attack, automation, business, cloud, compliance, control, crowdstrike, cybersecurity, data, data-breach, endpoint, exploit, finance, firewall, framework, healthcare, infrastructure, insurance, Internet, network, resilience, risk, service, supply-chain, technology, tool, update, vulnerability, windows, zero-dayThe normal choices are the dangerous ones: Consider the stack a typical large enterprise was running in 2024: One vendor for ERP and supply chain, another for perimeter enforcement, another for networking and another for endpoint protection. Standard choices, responsibly made. Within a twelve-month window, each of those categories experienced significant disruptions, from zero-day exploits…
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Hackers exploiting Acrobat Reader zero-day flaw since December
Attackers have been exploiting a zero-day vulnerability in Adobe Reader using maliciously crafted PDF documents since at least December. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/hackers-exploiting-acrobat-reader-zero-day-flaw-since-december/