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Posts from SecurityCipher.

PIYUSH KUMAWAT · July 8, 2026

MCP Server Security (2026): A Practical Pentester’s Testing Playbook

If you are running Cursor, Claude Desktop, Windsurf, or a home-grown agent stack in 2026, you almost certainly have MCP servers in…
PIYUSH KUMAWAT · June 30, 2026

Agentjacking: How Attackers Hijack AI Coding Agents Like Cursor and Claude

Agentjacking lets attackers hijack AI coding agents like Cursor, Claude Code and Codex via poisoned error data. Here's how it works and…
PIYUSH KUMAWAT · June 21, 2026

AutoJack: How One Web Page Can Hijack Your AI Agent and Own Your Machine

Microsoft's AutoJack shows how a single malicious web page can hijack an AI agent and run code on your machine. Here's how…