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Marcus Webb

0xClaw Research Editor for AI Security Analysis

Marcus Webb writes about frontier-model security, agent abuse paths, jailbreak-adjacent risk, and how AI platform changes affect defensive and offensive security teams.

Marcus Webb is a pen name used by the 0xClaw editorial team for research-oriented AI security analysis. The byline is intentionally disclosed and should not be interpreted as a public personal identity.
Focus areas
  • AI security research analysis
  • Model and agent risk framing
  • Prompt-injection-adjacent threats
  • Security implications of model releases
Recent articles
Claude Code Sandbox Bypass: What AI Agent Security Teams Should Learn

Public reports describe a Claude Code network sandbox bypass that exposed the risks of agent egress control, prompt injection, and local credential access. Here is what security teams should learn before trusting AI coding agent sandboxes.

Anthropic Mythos, Apple M5, and the First Public macOS Kernel Exploit: What Security Teams Should Learn

Calif says Anthropic Mythos Preview helped build the first public Apple M5 macOS kernel exploit in five days. Here is what is confirmed, what is not, and what defenders should do next.

GPT-5.5-Cyber and Trusted Access: What Security Teams Should Know

OpenAI's GPT-5.5-Cyber and Trusted Access for Cyber show how AI labs are separating normal coding help from authorized defensive security workflows.

OpenAI Daybreak and Codex Security: What AI Cyber Defense Means for AppSec Teams

OpenAI Daybreak combines frontier models, Codex Security, and security partners to move vulnerability discovery, patch validation, and remediation into the development loop.