About

Elad Beber

Hey, my name is Elad and I’m a security researcher. My work focuses primarily on cloud security across Azure, AWS and GCP, including cloud services, guest agents and paths to privilege escalation. It also examines sandboxing and isolation boundaries across cloud compute, virtualization layers, Kubernetes environments, AI coding tools and MCP servers. I research identity boundaries and build security tooling and agentic workflows that turn findings into reproducible attack techniques and validation scenarios. My technical foundation is in reverse engineering, including low-level systems and Android internals. I also spent several years playing CTFs with CamelRiders.

Experience

Senior Security Researcher @ Cymulate
  • Architect and scale agentic security validation systems using reusable agent skills and orchestration across specialized agents.
  • Develop a LangChain and LangGraph WAF validation pipeline that classifies CVEs, extracts and validates HTTP exploit payloads, and generates reproducible traffic simulations and PCAPs for security control testing.
  • Research emerging attack surfaces in AI coding assistants, MCP servers, cloud infrastructure, identity systems and enterprise management products.
  • Turn research findings into reproducible attack techniques and validation content for Cymulate’s Breach and Attack Simulation platform.
Vulnerability Researcher @ Cymulate
  • Discovered security weaknesses in GCP’s google-guest-agent and Microsoft Entra ID Pass-Through Authentication through source review, reverse engineering and attack path analysis.
  • Conducted vulnerability research into cloud services, identity boundaries and privileged guest agents.
  • Designed and implemented proof of concept attack scenarios for Cymulate’s BAS platform across Windows, Linux and cloud environments.
  • Built Kubernetes scanning and exploitation mechanisms for testing managed clusters and clusters deployed on premises.
  • Developed tooling for Cymulate’s Attack Surface Management capabilities to identify and validate exposures across organizational assets.
Mobile Security Researcher @ Matrix

Offensive mobile security research on Android internals and mobile reverse engineering. Designed security and recruiting challenges.

Education

B.Sc. Computer Science, graduated with honors, Holon Institute of Technology (HIT)

Certifications

Cybersecurity Program · Kernelios — Cyber Academy

Press & mentions

CybersecurityNews One-Click RCE in Azure Windows Admin Center Lets Attackers Execute Arbitrary Commands
CybersecurityNews Azure Identity Token Vulnerability Enables Tenant-Wide Compromise in Windows Admin Center
GBHackers Azure Identity Token Flaw Exposes Windows Admin Center to Tenant-Wide Breaches
CybersecurityNews Windows Admin Center Vulnerability (CVE-2025-64669) Lets Attackers Escalate Privileges
XPN InfoSec Blog (Adam Chester) An Evening With Claude Code — “a fantastic writeup of a code exec vulnerability”
Cyberpress Security Flaw in Claude Lets Attackers Abuse AI to Run Unauthorized Commands
CybersecurityNews Claude Vulnerabilities Let Attackers Execute Unauthorized Commands With its Own Help
Embrace The Red Anthropic Filesystem MCP Server: Directory Access Bypass — “shout out to Elad Beber, who reported it to Anthropic first”
GBHackers Claude AI Flaws Let Attackers Execute Unauthorized Commands Using the Model Itself
SQ Magazine Claude's AI Assistant Helped Hackers Exploit Its Own Weaknesses
tl;dr sec Anthropic MCP research featured (issue #293)
CybersecurityNews Anthropic's MCP Server Vulnerability Allowed Attackers to Escape Sandbox and Execute Code
GBHackers Anthropic MCP Server Flaw Allows Sandbox Escape and Code Execution
SecurityOnline Anthropic MCP Server Flaws: Path Traversal & Symlink Attacks Allow RCE
The Hacker News Critical MCP-Remote Vulnerability
CybersecurityNews AWS Systems Manager Plugin Vulnerability Lets Attackers Execute Arbitrary Code
GBHackers AWS Systems Manager Plugin Flaw Allows Arbitrary Code Execution
The Hacker News Amazon EC2 SSM Agent Flaw Patched After Disclosure
Forbes Microsoft Issues Mandatory 2FA Login Deadline Alert (Double Agent research)
SC Media Microsoft Entra ID bug lets attackers impersonate any synched user
The Hacker News Double Agent research coverage