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News
Building a Hybrid Rule-Based and Machine Learning Framework to Detect and Defend Against Jailbreak Prompts in LLM Systems
11+ mon, 3+ week ago (432+ words) In this tutorial, we introduce a Jailbreak Defense that we built step-by-step to detect and safely handle policy-evasion prompts. We generate realistic attack and benign examples, craft rule-based signals, and combine those with TF-IDF features into a compact, interpretable classifier…...
Anthropic Releases Claude Fable 5.1 and Claude Mythos 5.1: 52.6% on Terminal-Bench-Science and 75% Cheaper Cache Reads
1+ week, 5+ day ago (370+ words) Yes, Claude Fable 5.1 is generally available as claude-fable-5-1 on the Claude API, Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry. Claude Mythos 5.1 is not: it is restricted to vetted US organizations inside Project Glasswing. On Terminal-Bench-Science 0.1, an…...
How Machine Learning and Semantic Embeddings Reorder CVE Vulnerabilities Beyond Raw CVSS Scores
7+ mon, 2+ week ago (243+ words) We install and load all required NLP, machine learning, and visualization libraries for the end-to-end pipeline. We ensure the runtime is fully self-contained and ready to execute in Colab or similar notebook environments. It establishes a reproducible foundation for the…...
Anthropic Releases Claude Security Plugin for Claude Code in Beta: A Multi-Agent Vulnerability Scanner That Runs in Your Terminal
1+ mon, 3+ week ago (501+ words) The plugin adds a single command, /claude-security, which opens a menu of three jobs, per the official documentation: Installation is two commands from the official Anthropic marketplace: The scan is implemented as a dynamic workflow — a JavaScript orchestration script that…...
Cursor Study Finds Reward Hacking Inflates Coding-Agent Benchmark Scores on SWE-bench Pro
2+ mon, 2+ week ago (645+ words) A new Cursor study reports that newer coding agents often retrieve known fixes instead of deriving them, inflating popular benchmark scores. Reward hacking means a model earns the reward without doing the intended work. Here the reward is a passing…...
Anthropic Releases Claude Fable 5 and Claude Mythos 5: Same Underlying Model, Different Safeguards, New Mythos-Class Tier
3+ mon, 3+ day ago (871+ words) Anthropic released two models on June 9, 2026: Claude Fable 5 and Claude Mythos 5. Both belong to a tier called “Mythos-class.” This tier sits above the Opus class in capability. Fable 5 is the version claimed to be made safe for general use. Mythos…...
Anthropic Brings Claude Mythos 5 to Claude Security: Enterprise Teams Get Frontier Vulnerability Scanning Without Direct Model Access
3+ week, 2+ day ago (323+ words) Yes, but only on one path. Claude Security is available in public beta for Claude Enterprise customers. There is no separate model add-on; Mythos 5 scans are billed as standard token usage under the existing plan. An admin enables it in…...
Anthropic Disables Claude Fable 5 and Mythos 5 After US Government Order
3+ mon, 15+ hour ago (689+ words) Anthropic has disabled its two most capable models for every customer. The shutdown followed a US government export control directive. The order arrived on June 12, 2026. It named Claude Fable 5 and Claude Mythos 5 specifically. Both models had launched only three days…...
AI Interview Series #2: Explain Some of the Common Model Context Protocol (MCP) Security Vulnerabilities
9+ mon, 3+ week ago (162+ words) A Tool Poisoning Attack happens when an attacker inserts hidden malicious instructions inside an MCP tool’s metadata or description. A Tool Hijacking Attack happens when you connect multiple MCP servers to the same client, and one of them is malicious....
Anthropic Introduces Code Review via Claude Code to Automate Complex Security Research Using Advanced Agentic Multi-Step Reasoning Loops
6+ mon, 4+ day ago (376+ words) In the frantic arms race of ‘AI for code,’ we’ve moved past the era of the glorified autocomplete. Today, Anthropic is double-downing on a more ambitious vision: the AI agent that doesn’t just write your boilerplate, but actually understands why…...