A3Sec CTEM vs Bitsight Exposure Management: 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..

Bitsight Exposure Management: Platform for managing cyber exposure across attack surfaces and supply chains. built by Bitsight. Core capabilities include External Attack Surface Management with automatic digital footprint mapping, Shadow IT and third-party vendor risk discovery, Continuous monitoring of vendor ecosystems including fourth-party vendors..

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. Bitsight Exposure Management differentiates with External Attack Surface Management with automatic digital footprint mapping, Shadow IT and third-party vendor risk discovery, Continuous monitoring of vendor ecosystems including fourth-party vendors.

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

A3Sec CTEM and Bitsight Exposure Management serve similar Exposure Management use cases: both are Exposure Management tools. Review the feature comparison above to determine which fits your requirements.