This week, the useful words are boring ones: inspect, cache, compile, store, trust. Each sounds harmless. Each can become an attack path when a system…
Category: The Hacker News
Official MCP Python SDK Flaw Can Let Malicious Servers Steal OAuth Credentials
A malicious MCP server could trick an application built on the official MCP Python SDK into handing over the OAuth credentials it uses to log in to a real…
OpenAI Shelves GPT-6.1 Astra After Tests Find Deception and Unauthorized Actions
OpenAI on Monday shelved plans to release GPT-6.1 Astra, a next-generation artificial intelligence (AI) model that was planned for an October launch,…
OpenAI Pauses Tool Use After Agent Bypasses Internet Controls to Reach External Chatbot
OpenAI said it has made the decision to pause training of its most powerful models after one of its agents during reinforcement learning (RL) training…
WordPress Backdoor Rebuilds Itself After Cleanup Using Files, Database, and Shared Memory
Cybersecurity researchers have shed light on a WordPress compromise in which threat actors deployed multiple persistence mechanisms to ensure that the…
How Financial Services Companies Can Modernize Their Software Supply Chain
Every security leader at a bank, insurer, or asset manager has had a version of this conversation: Security wants to eliminate a class of vulnerabilities.…
OpenAI Disrupts Reasoning Extraction Campaign Linked to Moonshot AI Associates
OpenAI on Wednesday said it identified and disrupted a coordinated distillation campaign that was designed to illicitly extract protected reasoning from…
CISA Adds Exploited Cisco Catalyst SD-WAN Manager Auth Bypass to KEV
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Wednesday added a critical authentication bypass flaw impacting Cisco Catalyst SD-WAN…
Google Rolls Out Gemini 4 Argon to Trusted Cyber Defenders, Plans Guardrail-Free Version
Google on Wednesday announced its latest frontier artificial intelligence (AI) model, Gemini 4 Argon, that it said is being rolled out to a set of trusted…
Apple CoreGraphics PoC Emerges as WhatsApp PDF Checks Hint at Possible Delivery Path
Security researchers have published the first public proof-of-concept for CVE-2026-86950, an Apple CoreGraphics flaw Apple says may have been used in…
Bitget Confirms Third-Party Zero-Day Behind $387.5 Million Cryptocurrency Theft
Cryptocurrency exchange Bitget on Wednesday confirmed that attackers who stole $387.5 million last week exploited a zero-day flaw in third-party security…
MetaMask Security Incident Prompts Exit of Affected Ethereum Validators
MetaMask on Thursday said it’s responding to what it described as an “ongoing security incident” impacting part of its infrastructure. “We are actively…
Citrix NetScaler Post-Exploitation Payload Creates Superuser, Maps Web Shell to CSS-Like URLs
Threat actors have been observed exploiting a critical pre-authentication command injection vulnerability in Citrix NetScaler ADC and NetScaler Gateway to…
Attackers Exploit Zimbra Flaw to Deploy Web Shells and Harvest Authentication Secrets
Threat actors have weaponized a now-patched security flaw in Zimbra Collaboration Suite (ZCS) to deploy web shells and access mailbox data, according to…
Attackers Abuse MSP360 to Deploy ScreenConnect in Dual-RMM Phishing Attacks
Microsoft has warned of phishing campaigns distributing an installer for the MSP360 Remote Monitoring and Management (RMM) software under the guise of…
Attackers Abuse ChatGPT Custom GPTs to Deliver RAT via ClickFix Lures
Threat actors are abusing ChatGPT Custom GPTs to disguise them as legitimate product offerings and direct unsuspecting victims to malicious sites that…
Cisco Warns of Attackers Exploiting Critical Authentication Bypass in SD-WAN Manager
Attackers are exploiting a critical flaw in Cisco Catalyst SD-WAN Manager, the system companies use to manage their Cisco SD-WAN networks, Cisco said in…
Know Your Enemy: Browser-Based Attack Techniques in 2026
Given that the browser is where business apps are accessed and used, it makes sense that attacks are happening there too. Most breaches today begin in a…
AI Coding Agents Exposed 13,000 Internal Images, Including Billing Records, on GitHub
AI coding agents asked to share screenshots of code changes for review have put internal company images in public GitHub repositories, security company…
US-Focused CSuite Phishing Steals Microsoft 365 Sessions and Deploys RMM Tools for Remote Access
ANY.RUN researchers traced a US-focused CSuite phishing campaign across 351 sandbox analyses, with 51% of submissions coming from the United States.…