OnSystem Logic OnSystem Defender

OnSystem Defender is an endpoint security product that combines application control with real-time memory protection to prevent malware, ransomware, zero-day exploits, backdoors, and software supply chain attacks from executing on Windows endpoints. How it works: - Learns the legitimate runtime behavior of every Windows application on a system - Enforces those learned behavioral rules once the learning phase is complete - Prevents any code that deviates from known-good behavior from executing within application memory - Uses a multi-layered, coarse-to-fine filtering approach based on deterministic rules Core protection modes: - Whitelisting: Regulates unauthorized application usage - Audit Mode: Detects unauthorized application activity without blocking - Lock Mode: Prevents unauthorized application actions Key differentiators from traditional AV/EDR/XDR: - Does not rely on signature-based or AI-driven detection tied to historical attack vectors - Focuses on prevention (stopping code execution) rather than detect-and-respond - Pre-configured application control policies are designed to reduce deployment complexity - Claims no performance impact due to deterministic rule-based enforcement Deployment: - Designed to integrate alongside existing endpoint security products (AV, EDR, XDR) - Targets Windows endpoints and servers - Marketed toward CISOs, CTOs, SOC teams, MSSPs, SecDevOps, and OT/infrastructure environments The product uses patent-pending technology and operates by learning legitimate application behaviors, then enforcing those behaviors to block malicious code from running inside any application.