A3Sec CTEM vs Onit Security: Side-by-Side Comparison (2026)

A3Sec CTEM: Managed CTEM service for continuous attack surface & threat exposure mgmt. built by A3Sec. Core capabilities include Continuous asset discovery and mapping, including unknown assets, with a dynamic inventory, Real-time visibility into all assets and their exposure levels, Automated attack simulations to validate vulnerability exploitability..

Onit Security: AI-driven platform resolving vuln exposures via persistent, reusable decisions. built by Onit Security. Core capabilities include Decision surfacing: maps vulnerabilities to business decisions rather than severity scores alone, Impact assessment: evaluates exposures against business and environmental context, Owner assignment: automatically determines and assigns remediation ownership..

Both serve the Exposure Management market but differ in approach, feature depth, and target audience.

A3Sec CTEM differentiates with Continuous asset discovery and mapping, including unknown assets, with a dynamic inventory, Real-time visibility into all assets and their exposure levels, Automated attack simulations to validate vulnerability exploitability. Onit Security differentiates with Decision surfacing: maps vulnerabilities to business decisions rather than severity scores alone, Impact assessment: evaluates exposures against business and environmental context, Owner assignment: automatically determines and assigns remediation ownership.

A3Sec CTEM is developed by A3Sec. Onit Security is developed by Onit Security. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

A3Sec CTEM and Onit Security serve similar Exposure Management use cases: both are Exposure Management tools, both cover Vulnerability Prioritization. Review the feature comparison above to determine which fits your requirements.