cybersecurity

10+ articles

AI development AI models AI solutions AI tools Anthropic

OpenAI Ships GPT-5.5-Cyber, a Near-Mythos Model for Vetted Defenders

OpenAI launched GPT-5.5-Cyber, a specialized model for cybersecurity defenders that scored 81.9% on the CyberGym benchmark and completed simulated corporate cyberattacks. The UK AISI found it nearly as capable as Anthropic's Claude Mythos — 20% vs 30% success on a 32-step attack simulation. But the strategy diverges: Anthropic locks Mythos to ~40 orgs, while OpenAI offers tiered access through its Trusted Access for Cyber program.

yesterday

OpenAI Ships GPT-5.5-Cyber, a Near-Mythos Model for Vetted Defenders

OpenAI Launches GPT-5.5-Cyber, Taking Direct Aim at Anthropic Mythos

OpenAI launched GPT-5.5-Cyber on May 7 — a cybersecurity-focused AI model rolling out to vetted defenders. The release comes a month after Anthropic's Claude Mythos and signals an escalating arms race in AI-powered cyber tools, with both companies jockeying for government trust.

2 days ago

OpenAI Launches GPT-5.5-Cyber, Taking Direct Aim at Anthropic Mythos

Anthropic Mythos Exposes AI Governance Crisis as Models Gain Autonomy

Anthropic's Claude Mythos Preview model, which can autonomously execute multi-step cyberattacks and discovered decades-old software bugs, has triggered Project Glasswing — a restricted-access coalition with CISA, Microsoft, and Apple. The model's capabilities are forcing a reckoning over how companies govern AI that can act independently.

May 3

Anthropic Mythos Exposes AI Governance Crisis as Models Gain Autonomy

Anthropic Built an AI Too Dangerous to Release. Then OpenAI Did Too.

Anthropic's Mythos can find and exploit software vulnerabilities as well as top security experts — so the company restricted access. The White House pushed back on broader release. Then OpenAI followed suit with its own restricted GPT-5.5-Cyber model. Meanwhile, Anthropic launched Claude Security for defenders. The cybersecurity AI arms race has officially entered a new phase.

May 2

Anthropic Built an AI Too Dangerous to Release. Then OpenAI Did Too.

White House Blocks Anthropic Mythos Rollout as Security Fears Mount

The White House is pushing back against Anthropic's plan to expand access to its Mythos cybersecurity AI model, citing security risks. The standoff highlights a growing tension between AI companies wanting to ship powerful tools and governments worried about who gets access.

May 1

White House Blocks Anthropic Mythos Rollout as Security Fears Mount

Anthropic Opens Claude Security Beta for Codebase Vulnerability Scanning

Anthropic has taken Claude Security out of closed preview, giving Claude Enterprise customers an AI-powered scanner that traces data flows across entire codebases to catch vulnerabilities traditional tools miss. Hundreds of organizations already used it in preview to fix bugs that had slipped through for years.

May 1

Anthropic Opens Claude Security Beta for Codebase Vulnerability Scanning

OpenAI Launches GPT-5.5-Cyber With Restricted Access After Criticizing Anthropic

OpenAI is rolling out GPT-5.5-Cyber to a select group of 'critical cyber defenders,' the same restricted-access playbook Sam Altman called 'fear-based marketing' when Anthropic used it for Mythos. UK government benchmarks show the model may be the most capable yet tested.

May 1

OpenAI Launches GPT-5.5-Cyber With Restricted Access After Criticizing Anthropic

Claude Opus 4.7 Release: New AI Model Delivers Advanced Coding Capabilities

Claude Opus 4.7, Anthropic's latest AI model, is now available with standout improvements in software engineering. At $5 per million input tokens and $25 per million output tokens, it delivers better code quality and efficiency, making it a top choice for developers seeking to offload complex coding tasks. However, a tokenizer change has some builders worried about increased costs.

Apr 27

Claude Opus 4.7 Release: New AI Model Delivers Advanced Coding Capabilities

Anthropic's Mythos AI Sparks Security Concerns: A Boon or Threat?

Mozilla's Firefox leveraged Anthropic's Mythos AI to patch 271 security flaws, highlighting AI's potential in cybersecurity. However, concerns about the AI's power stir debates in Washington, with the White House closely monitoring its implications.

Apr 24

Anthropic's Mythos AI Sparks Security Concerns: A Boon or Threat?

NEC Partners with Anthropic to Drive AI Adoption in Japan

NEC joins forces with Anthropic to boost AI use in Japan's enterprise space. They're creating secure, industry-specific AI tools starting with sectors like finance and manufacturing. Expect faster digital transformation in highly regulated areas.

Apr 23

NEC Partners with Anthropic to Drive AI Adoption in Japan