📡 Tech & Security Digest — 2026-10-27 Curated from Hacker News, security blogs, and tech publications.
BleepingComputer Microsoft releases emergency .NET patches for critical Brotli flaw — Microsoft released emergency .NET security updates to patch a critical vulnerability known as Broccoli2Shell, also tracked as Node2Shell and HTTP2Shel… Apple backports CoreGraphics zero-day patches to older iPhones — Apple has backported security patches released last month to older iPhones and iPads, addressing a zero-day bug exploited in “extremely sophisticated… CISA confirms PHP2Shell vulnerabilities now exploited in attacks — The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added the PHP2Shell vulnerabilities to its catalog of actively exploited securit… PHP2Shell security flaws now sucessfully exploited in the wild — Two critical RCE vulnerabilities (CVE-2026-109618 and CVE-2026-109619), collectively tracked as PHP2Shell, have been successfully exploited in the wil… BlackX UEFI bootkit exploits Baton Drop flaw to bypass Secure Boot — A new UEFI bootkit named BlackX, deployed in an espionage campaign in early 2026, exploited the old Baton Drop vulnerability to bypass Secure Boot and… Hacker News PaperPilot – Zero-Cloud, Pure-Rust PDF Engine with WASM and MCP (231 pts) The Mythical Man-Month in the Age of AI (178 pts) Cross-request KV cache exposure in the GLM-5.3 Workers AI model (155 responses) (142 pts) Show HN: Hob - Open-source, on device alternative to Claude Cowork and ChatGPT (148 pts) Concerning behavior from a popular open-weight AI model (304 pts) Roblox downloaded 145GB models from us (including adult content) without asking (64 pts) Three new discoveries in mathematics, computer science, and physics (946 pts) The Exponential Time Hypothesis Is False [pdf] (648 pts) Show HN: Encarta 95 Web (60 pts) New ‘Circadian’ Subtype of Depression Affecting 1 in 4 Patients (68 pts) Krebs on Security Microsoft Patches More Than 1,400 Security Flaws — Microsoft today issued updates to fix more than 1,400 security vulnerabilities in its Windows operating systems and other software. Today’s epic patch… Microsoft Plugs Nearly 1,000 Security Holes — Microsoft Corp. today issued updates to plug at least 974 security holes in its Windows operating systems and other software, by far its biggest singl… The Hacker News PHP2Shell Exploit Attempts Hit Millions as Attackers Try to Deploy Mirai Malware — Threat actors have been observed unsuccessfully attempting to exploit the newly disclosed PHP2Shell vulnerabilities to rope infected systems into a Mi… LiteLLM Suspects GitHub Token Leak in AI Gateway Logs Behind Malicious Package Release — LiteLLM on Wednesday disclosed that threat actors compromised “multiple independent security controls” to push a malicious version of the Python packa… ⚡ Weekly Recap: This2Shell, That2Shell, Everything’s an RCE? Rogue AI, Supply Chain Chaos and More — This2Shell, That2Shell, Everything2Shell. That’s pretty much how the last week went. Critical bugs that let attackers run code remotely are showing up… Malicious File in Downloads Folder Tries to Trick AI Coding Agent Into Installing Malware — A malicious instruction file sitting in a developer’s Downloads folder tried to make their AI coding agent install a known-malicious npm package, secu… Researchers Demonstrate Node2Shell RCE Exploit on Node.js Build Using Crafted Brotli Data — Malicious Brotli data can make an application on an official build of Node.js run attacker-supplied code, security researchers at Imperva have de… LiteLLM Compromised in Supply Chain Attack Delivering Credential Stealer and Backdoor — The popular LiteLLM Python package has been compromised as part of a software supply chain attack that delivered a credential stealer and a backdoor, … PHP Issues Second Windows Security Update in Five Days to Fix Brotli Code Execution Flaw — PHP has rebuilt its official Windows packages for PHP 8.2 through 8.5 to fix CVE-2026-111497, a flaw in the Brotli compression library that the packag… Attackers Use Microsoft Teams IT Support Scams to Deploy Malware and Ransomware — Cybersecurity researchers are calling attention to what they say is a “recurring social engineering pattern” across hundreds of cases in which threat … Arista Warns of Critical VeloCloud SQL Injection Zero-Day Exploited in Attacks — Attackers are exploiting a zero-day SQL injection flaw in Arista’s VeloCloud Orchestrator (VCO), the central management system for VeloCloud…