Anthropic Releases New Claude Sandbox, Security Guidance Plugin
Summary
Anthropic released two new security features for Claude: a self-hosted sandbox that lets Claude Managed Agents (AI systems that can perform tasks autonomously) run code in user-controlled environments like their own servers or managed providers, and a security guidance plugin for Claude Code that scans for vulnerabilities (weaknesses that attackers could exploit) as developers write code. The plugin has reduced security issues by 30-40% in internal testing by catching problems before formal code review.
Solution / Mitigation
Anthropic provides two explicit mitigations: (1) Deploy the Claude sandbox by configuring Claude Managed Agents to execute tools in a user-controlled environment, applying your own network policies, audit logging, and security tooling while keeping files and repositories within your perimeter; (2) Use the security guidance plugin for Claude Code, available through the official Anthropic marketplace, which scans for vulnerabilities during file edits, after AI-generated changes, and at commit time to catch issues before full code review.
Classification
Affected Vendors
Related Issues
Original source: https://www.securityweek.com/anthropic-releases-new-claude-sandbox-security-guidance-plugin/
First tracked: May 27, 2026 at 08:00 AM
Classified by LLM (prompt v3) · confidence: 85%