A3Sec CTEM vs DarkLight Cyio: 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..

DarkLight Cyio: CTEM platform that prioritizes cyber risks using threat intel & business context. built by DarkLight. Core capabilities include Continuous ingestion and application of threat intelligence to reprioritize risks daily, Multi-perspective risk prioritization (assets, adversaries, configurations, controls, business context), Multiple remediation path suggestions (acceptance, transfer, mitigation)..

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. DarkLight Cyio differentiates with Continuous ingestion and application of threat intelligence to reprioritize risks daily, Multi-perspective risk prioritization (assets, adversaries, configurations, controls, business context), Multiple remediation path suggestions (acceptance, transfer, mitigation).

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

A3Sec CTEM and DarkLight Cyio 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.