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Cybersecurity Headlines — April 22, 2026 SEALSQ Advances Post-Quantum Cryptography (PQC) in Silicon to Counter AI-Driven Threats Following Anthropic’s Mythos Breakthrough — GlobeNewswire CISA flags new SD-WAN flaw as actively exploited in attacks — BleepingComputer Actively exploited Apache ActiveMQ flaw impacts 6,400 servers — BleepingComputer U.S. CISA adds Cisco Catalyst, Kentico Xperience, PaperCut NG/MF, Synacor ZCS, Quest KACE SMA, and JetBrains TeamCity flaws to its Known Exploited Vulnerabilities catalog — Securityaffairs.com Inside the ‘fake police raid’ that forced a $1M Bitcoin transfer — Cointelegraph CISA Adds 8 Exploited Flaws to KEV, Sets April-May 2026 Federal Deadlines — Internet Ripple wants the XRP Ledger to be quantum-proof by 2028. Here is its plan — CoinDesk Cybersecurity jobs available right now: April 21, 2026 — Help Net Security ODIN EMF Faraday Bag Claims Evaluated: Advanced Full Spectrum Signal-Blocking Cage for Phones, Tablets & Key Fobs — GlobeNewswire Vulnerability Summary for the Week of April 13, 2026 — Cisa.gov From the Trenches As a cybersecurity practitioner, I’m seeing two stories that are making me sit up and take notice - SEALSQ’s advancements in post-quantum cryptography (PQC) to counter AI-driven threats, and CISA flagging new SD-WAN flaws as actively exploited in attacks. ...

Cybersecurity Headlines — April 21, 2026 Mythos: An AI tool too powerful for public release — Malwarebytes.com ⚡ Weekly Recap: Vercel Hack, Push Fraud, QEMU Abused, New Android RATs Emerge & More — Internet Supercharged Security: Security in the Time of Mythos — Fortinet.com “The vault is solid, the delivery truck is not” — strong key storage, shaky transfer: why this Windows Recall feature raises new security questions — Windows Central 52M-Download protobuf.js Library Hit by RCE in Schema Handling — HackRead Anthropic MCP Design Vulnerability Enables RCE, Threatening AI Supply Chain — Internet NCSC Outlines Coordinated Plan to Boost NHS Cyber Resilience — Infosecurity Magazine $62.31 Bn Automotive Cybersecurity Market, 2026-2040: Continental Stands out with Its End-to-end Portfolio, Encompassing Secure Gateway Solutions Customized for OEMs Like BMW and Ford — GlobeNewswire Week in review: Acrobat Reader flaw exploited, Claude Mythos offensive capabilities and limits — Help Net Security Mirai Variant Nexcorium Exploits CVE-2024-3721 to Hijack TBK DVRs for DDoS Botnet — Internet From the Trenches As a cybersecurity practitioner, I’ve been keeping an eye on the latest developments in the field, and there are two stories that caught my attention this week. First up is the Anthropic MCP Design Vulnerability, which has exposed a design flaw in AI systems that could be exploited to launch a Remote Code Execution (RCE) attack. This is a major concern for anyone working with artificial intelligence, as it highlights the need for more robust security measures to protect these systems. ...

Cybersecurity Headlines — April 20, 2026 Week in review: Acrobat Reader flaw exploited, Claude Mythos offensive capabilities and limits — Help Net Security Mirai Variant Nexcorium Exploits CVE-2024-3721 to Hijack TBK DVRs for DDoS Botnet — Internet The Boy That Cried Mythos: Verification is Collapsing Trust in Anthropic | flyingpenguin — Flyingpenguin.com Time for government, business leaders to figure out AI cybersecurity regulation — Harvard School of Engineering and Applied Sciences Payouts King ransomware uses QEMU VMs to bypass endpoint security — BleepingComputer CISA tells feds to patch 13-year-old Apache ActiveMQ bug under active attack — Theregister.com At RSAC 2026, AI optimism and anxiety – and an MIA U.S. government — Techtarget.com NIST gives up enriching most CVEs — Risky.biz News brief: Microsoft security vulnerabilities revealed — Techtarget.com What is Mythos and why are experts worried about Anthropic’s AI model — Scientific American From the Trenches As a cybersecurity practitioner, I’ve been keeping an eye on the latest developments that are making my job more challenging. One of the most concerning stories is the exploitation of a flaw in Adobe Acrobat Reader, which has been widely used by individuals and organizations alike. This vulnerability was recently exposed, and it’s clear that attackers have already started to exploit it. ...

Cybersecurity Headlines — April 19, 2026 Mirai Variant Nexcorium Exploits CVE-2024-3721 to Hijack TBK DVRs for DDoS Botnet — Internet The Boy That Cried Mythos: Verification is Collapsing Trust in Anthropic | flyingpenguin — Flyingpenguin.com Time for government, business leaders to figure out AI cybersecurity regulation — Harvard School of Engineering and Applied Sciences Payouts King ransomware uses QEMU VMs to bypass endpoint security — BleepingComputer CISA tells feds to patch 13-year-old Apache ActiveMQ bug under active attack — Theregister.com At RSAC 2026, AI optimism and anxiety – and an MIA U.S. government — Techtarget.com NIST gives up enriching most CVEs — Risky.biz News brief: Microsoft security vulnerabilities revealed — Techtarget.com What is Mythos and why are experts worried about Anthropic’s AI model — Scientific American It Is Time to Ban the Sale of Precise Geolocation — Lawfaremedia.org From the Trenches As a cybersecurity practitioner, I’ve been seeing an alarming trend lately - the increasing reliance on AI-powered systems without adequate consideration for their security implications. The recent article “The Boy That Cried Mythos: Verification is Collapsing Trust in Anthropic” highlights the risks of this approach. It’s clear that if we don’t establish robust verification processes, we’ll continue to see instances like the one where a malicious actor exploited CVE-2024-3721 to hijack TBK DVRs for DDoS botnets. ...

Cybersecurity Headlines — April 18, 2026 Three Microsoft Defender Zero-Days Actively Exploited; Two Still Unpatched — Internet Tracking Mirai Variant Nexcorium: A Vulnerability-Driven IoT Botnet Campaign — Fortinet.com Researcher drops two more Microsoft Defender zero-days, all three now exploited in the wild — Help Net Security CISA flags Apache ActiveMQ flaw as actively exploited in attacks — BleepingComputer NIST Limits CVE Enrichment After 263% Surge in Vulnerability Submissions — Internet Mythos Poses Risk to SEC Market-Tracking Database, Group Says — Insurance Journal Discourse Is Not Going Closed Source — Discourse.org Apache ActiveMQ CVE-2026-34197 Added to CISA KEV Amid Active Exploitation — Internet How Zscaler and OpenAI turn zero-trust security into an AI accelerator — SiliconANGLE News Mythos poses risk to SEC market-tracking database, group says — Financial Post From the Trenches As a cybersecurity practitioner, I’m seeing an uptick in actively exploited zero-days across multiple platforms. The recent discovery of three Microsoft Defender Zero-Days that are being actively exploited is particularly concerning. Two of these vulnerabilities remain unpatched, leaving organizations vulnerable to attacks. ...

Cybersecurity Headlines — April 17, 2026 ThreatsDay Bulletin: Defender 0-Day, SonicWall Brute-Force, 17-Year-Old Excel RCE and 15 More Stories — Internet Anthropic Ready to Offer Mythos to British Banks — pymnts.com NIST Drops NVD Enrichment for Pre-March 2026 Vulnerabilities — Infosecurity Magazine Supply chain dependencies: Have you checked your blind spot? — We Live Security “Microsoft fired the skilled people, leaving flowchart followers”: Microsoft’s Security Response Center is being blamed for the zero-day BlueHammer exploit leak, but I can’t tell who’s right — Windows Central Anthropic’s Nuclear Bomb — War on the Rocks Anthropic’s Nuclear Bomb — War on the Rocks Singapore urges firms to strengthen cybersecurity amid AI risks after Anthropic’s Mythos preview — CNA Sullivan & Cromwell Discusses Proposed FSOC Changes to Nonbank SIFI Designation Guidance — Columbia.edu NIST shifts National Vulnerability Database to risk-based triage as CVE submissions hit record levels — SiliconANGLE News From the Trenches As a cybersecurity practitioner, I’ve been keeping an eye on the latest developments that could impact my clients’ security posture. One of the most concerning stories is the SonicWall brute-force attack, which highlights the importance of robust password management and multi-factor authentication. ...

Cybersecurity Headlines — April 16, 2026 U.S. CISA adds Microsoft SharePoint Server, and Microsoft Office Excel flaws to its Known Exploited Vulnerabilities catalog — Securityaffairs.com Anthropic’s Mythos AI found thousands of zero-day exploits and the banking system’s emergency response revealed how unprepared everyone is — Techpinions.com Tenable unveils OT discovery engine to expose cyber-physical risks — Help Net Security Picus Security Earns Top Ranking in Spring 2026 G2 Grid Report for Breach and Attack Simulation — GlobeNewswire Open Channels FM: The Imperative of Layered Security in Modern Web Hosting — Openchannels.fm Tenable Expands Exposure Management with Instant OT Discovery to Secure Cyber-Physical Systems — Tenable.com Presentation: Empower Your Developers: How Open Source Dependencies Risk Management Can Unlock Innovation — InfoQ.com Presentation: Empower Your Developers: How Open Source Dependencies Risk Management Can Unlock Innovation — InfoQ.com Axonius targets remediation gap with AI, cyber-physical assets and data trust layer — SiliconANGLE News A retired general’s warning: America can’t fight the AI arms race on tech it doesn’t control — Fortune From the Trenches As a cybersecurity practitioner, I’m always on the lookout for vulnerabilities that can be exploited by attackers. The recent additions to CISA’s Known Exploited Vulnerabilities catalog are a prime example of this - Microsoft SharePoint Server and Microsoft Office Excel flaws have been added, highlighting the need for organizations to patch these systems ASAP. ...

Cybersecurity Headlines — April 15, 2026 Quantum computers could usher in a crisis worse than Y2K — New Scientist Zepto vs rivals; Cybersecurity goes outsourced — The Times of India WELL Subsidiary CYBERWELL Launches CYDEcore Fusion Platform and Provides Strategic Business Update to Address Escalating Cybersecurity Threats — Financial Post Attackers target unpatched ShowDoc servers via CVE-2025-0520 — Securityaffairs.com Attackers target unpatched ShowDoc servers via CVE-2025-0520 — Securityaffairs.com What 2025 taught us about the importance of resilience in retail — TechRadar The Map Is Not the Territory: What Cyber Threat Maps Really Show — Cloudtweaks.com Cyber Risk Ratings Fade Out; Actionable Intelligence Takes The Spotlight — Forrester.com CISA Adds 6 Known Exploited Flaws in Fortinet, Microsoft, and Adobe Software — Internet Cybersecurity jobs available right now: April 14, 2026 — Help Net Security From the Trenches As a cybersecurity practitioner, I’m constantly on the lookout for emerging threats that can compromise our systems and data. Two stories from today’s headlines caught my attention because they highlight the growing urgency of addressing unpatched vulnerabilities in our software. ...

Cybersecurity Headlines — April 14, 2026 Cybersecurity Market Surges to $351.92 billion by 2030 | CAGR 9.1% — GlobeNewswire Are AI Agents Your Next Security Nightmare? — Kdnuggets.com Does ‘federated unlearning’ in AI improve data privacy, or create a new cybersecurity risk? — The Conversation Africa ⚡ Weekly Recap: Fiber Optic Spying, Windows Rootkit, AI Vulnerability Hunting and More — Internet Building Cybersecurity Skills: A Complete Guide for Modern Developer — C-sharpcorner.com Claude Mythos and Project Glasswing: why an AI superhacker has the tech world on alert — The Conversation Africa OpenAI Revokes macOS App Certificate After Malicious Axios Supply Chain Incident — Internet How does Anthropic Mythos increase cyber risk? #tech — Alltoc.com Security Affairs newsletter Round 572 by Pierluigi Paganini – INTERNATIONAL EDITION — Securityaffairs.com From the Trenches As a cybersecurity practitioner, I’m always on the lookout for potential threats and emerging trends that can impact my work. Two stories from today’s headlines caught my attention - “Are AI Agents Your Next Security Nightmare?” and “Does ‘federated unlearning’ in AI improve data privacy, or create a new cybersecurity risk?” ...

Cybersecurity Headlines — April 13, 2026 How does Anthropic Mythos increase cyber risk? #tech — Alltoc.com Security Affairs newsletter Round 572 by Pierluigi Paganini – INTERNATIONAL EDITION — Securityaffairs.com Week in review: Windows zero-day exploit leaked, Patch Tuesday forecast — Help Net Security Can Anthropic Mythos AI detect hidden financial cyber threats before attacks, and how Wall Street banks test next-gen cybersecurity defense systems today — The Times of India Project Glasswing: AI That Can Hack and Save Coding Hacks — C-sharpcorner.com Android Flaw Leaves 30 Million Crypto Wallets Open To Attack: Microsoft Analysts — Bitcoinist Adobe Reader Zero-Day Exploit Uses Fake PDF Files To Steal User Data — Ubergizmo Show HN: Cyber Pulse. AI pipeline for triage and alerting on cyber news/intel — Google News How AI is getting better at finding security holes — NPR How did Anthropic’s Mythos raise cybersecurity concerns? #world — Alltoc.com From the Trenches As a cybersecurity practitioner, I’m constantly on the lookout for emerging threats that can compromise our systems and data. Two stories from today’s headlines caught my attention because they highlight the growing risks of cyber attacks and the importance of proactive defense measures. ...