Overview: Breach and Attack Simulation (BAS)

Quick Definition

A Breach and Attack Simulation is a cybersecurity testing methodology that uses automated tools to continuously simulate real-world cyberattacks against an organization's infrastructure. These simulations run safe, controlled attacks that mimic the tactics, techniques, and procedures (TTPs) used by actual threat actors to identify security gaps and validate defensive controls.

Unlike traditional penetration testing, which typically occurs periodically and requires human expertise, BAS platforms operate continuously and autonomously. They execute predefined attack scenarios across networks, endpoints, email systems, and cloud environments to test how well security controls detect, prevent, and respond to threats. The simulations cover various attack vectors including phishing, lateral movement, data exfiltration, and privilege escalation.

BAS tools provide detailed reporting on which attacks succeeded, failed, or went undetected, offering security teams actionable insights into their defensive posture. This allows organizations to prioritize remediation efforts, optimize security tool configurations, and measure the effectiveness of their security investments over time. The continuous nature of BAS helps ensure that security controls remain effective as environments change and new threats emerge.

Popular BAS platforms include AttackIQ, SafeBreach, and Cymulate, each offering different approaches to attack simulation and varying levels of integration with existing security infrastructure.