SharePoint 0-Day, Patch Tuesday Fixes, OpenAI Launches GPT-5.4-Cyber, PHP Composer Flaws

THN Daily Updates The Art of Attack: Attacker Mindset for Security Professionals ($30.00 Value) FREE for a Limited Time Take on the perspective of an attacker with this insightful new resource for ethical hackers, pentesters, and social engineers Download Now Sponsored LATEST NEWS Apr 15, 2026 Deterministic + Agentic AI: The Architecture Exposure Validation Requires Few technologies have moved from experimentation to boardroom mandate as quickly as AI. Across industries, leadership teams have embraced its broader potential, and boards, investors, and executives are already pus... Read More Microsoft Issues Patches for SharePoint Zero-Day and 168 Other New Vulnerabilities Microsoft on Tuesday released updates to address a record 169 security flaws across its product portfolio, including one vulnerability that has been actively exploited in the wild. Of these 169 ... Read More A Practical Framework to Detect Privileged Misuse Early Build continuous monitoring and stop identity threats before damage occurs. Read More OpenAI Launches GPT-5.4-Cyber with Expanded Access for Security Teams OpenAI on Tuesday unveiled GPT-5.4-Cyber, a variant of its latest flagship model, GPT‑5.4, that's specifically optimized for defensive cybersecurity use cases, days after rival Anthropic unveiled its own front... Read More New PHP Composer Flaws Enable Arbitrary Command Execution — Patches Released Two high-severity security vulnerabilities have been disclosed in Composer, a package manager for PHP, that, if successfully exploited, could result in arbitrary command execution. The vulnerabilities&nbs... Read More DDoS Testing in 2026: Traffic Is Easy — Real Attack Simulation Is Not Traffic alone doesn’t validate DDoS resilience; only realistic attack simulation across mitigation layers does. Read More Google Adds Rust-Based DNS Parser into Pixel 10 Modem to Enhance Security Google has announced the integration of a Rust-based Domain Name System (DNS) parser into the modem firmware as part of its ongoing efforts to beef up the security of Pixel devices and push memory-safe code at a more fo... Read More AI-Driven Pushpaganda Scam Exploits Google Discover to Spread Scareware and Ad Fraud Cybersecurity researchers have unmasked a novel ad fraud scheme that has been found to leverage search engine poisoning (SEO) techniques and artificial intelligence (AI)-generated content to push deceptive news stories ... Read More The Art of Attack: Attacker Mindset for Security Professionals ($30.00 Value) FREE for a Limited Time Take on the perspective of an attacker with this insightful new resource for ethical hackers, pentesters, and social engineers Download Now Sponsored This email was sent to sikubaycom.s3cr3tz@blogger.com. You are receiving this newsletter because you opted-in to receive relevant communications from THN. To manage your email newsletter preferences, please click here. Contact THN: info@thehackernews.com Unsubscribe THN | K.P BLock, Pitampura, Delhi