Ultimate Entra ID CTF Challenge: Breach at the Beach Cybersecurity Exercise

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Breach at the Beach is a hands-on cybersecurity training exercise simulating real-world threats targeting Microsoft Entra ID, designed to educate professionals on detecting and mitigating data exfiltration techniques.

Introduction to Breach at the Beach

Varonis Threat Labs researchers developed a cybersecurity training exercise called Breach at the Beach, simulating real-world threats to Microsoft Entra ID. The initiative immerses participants in a scenario where they trace the activities of a malicious actor exploiting identity management systems. The project aims to educate security professionals on detecting and mitigating data exfiltration techniques in cloud-native environments.

The Narrative of Pixel: From Vacation to Cybersecurity Investigator

The training experience features a narrative involving Pixel, a cat character who transitions from a vacation to a cybersecurity investigator after discovering a breach in Entra ID. Players follow a series of challenges to identify the attacker’s objectives and prevent data loss. The scenarios are based on real-world cases observed by the developers, ensuring relevance to current threat landscapes.

The Role of Entra ID in Enterprise Security

Entra ID serves as a critical control plane for enterprise operations, managing user access, application permissions, and automated workflows. The increasing reliance on non-human identities—such as AI agents, service principals, and automated processes—has expanded the attack surface. A compromise in Entra ID could allow threat actors to assume these identities, enabling stealthy and scalable data exfiltration.

Expanding Attack Surfaces with Non-Human Identities

Researchers emphasize that modern attacks often exploit legitimate system features rather than misconfigurations, requiring defenders to recognize abnormal behavior in normal operations. The CTF avoids reliance on AI-driven tools, forcing participants to analyze raw Entra logs and develop manual detection strategies. This approach ensures learners grasp fundamental techniques before automated systems become ubiquitous.

Structure and Accessibility of the CTF

The training is structured into four stages, each offering 1 CPE credit upon completion. Participants who finish all challenges receive a certificate and a themed badge. The initiative is accessible online at https://breachatthebeach.com and is also available at industry events. At Black Hat USA 2026, the developers will host interactive sessions in the Varonis booth (number 2948) to guide attendees through the CTF.

Competitive Opportunities and Deadlines

Participants who complete the exercise by August 6, 2026, will be entered into a draw for a $2,000 gift card. A similar event is planned at DEF CON 34 in the Cloud Village, where competitors can engage in live Capture the Flag challenges. The CTF remains available online for those unable to attend in-person events, ensuring broad accessibility for cybersecurity professionals seeking to enhance their expertise.

Addressing Modern Security Challenges

The project highlights the growing complexity of securing AI-integrated systems. Researchers note that many security professionals lack exposure to audit logs from platforms like Dataverse and Copilot, which are critical for understanding AI-driven workflows. By addressing these gaps, the CTF aims to improve identity hygiene and reinforce principles like least privilege.

Feedback and Educational Value

Feedback from early testers at RSAC 2026 indicated the exercise balances challenge and educational value, with experienced participants reporting new insights. The initiative underscores the importance of hands-on training in combating evolving threats, particularly as organizations adopt AI at an accelerated pace. Participants are encouraged to use an active email address to claim CPE credits.

Researchers emphasize that modern attacks often exploit legitimate system features rather than misconfigurations, requiring defenders to recognize abnormal behavior in normal operations.

Conclusion

Breach at the Beach provides a practical, immersive way for cybersecurity professionals to understand and counter threats targeting identity management systems. By combining real-world scenarios with hands-on learning, the CTF equips participants with critical skills to protect evolving cloud-native environments.