A3Sec CTEM vs CalCom Hardening Suite (CHS): 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..

CalCom Hardening Suite (CHS): Automates server hardening with zero-downtime policy enforcement for Windows & Linux. built by CalCom Software. Core capabilities include Learning Mode: simulates policy impact on production servers without causing downtime, Enforcement Mode: applies customized hardening policies to servers, Monitoring Mode: real-time access control protection against unauthorized changes..

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. CalCom Hardening Suite (CHS) differentiates with Learning Mode: simulates policy impact on production servers without causing downtime, Enforcement Mode: applies customized hardening policies to servers, Monitoring Mode: real-time access control protection against unauthorized changes.

A3Sec CTEM is developed by A3Sec. CalCom Hardening Suite (CHS) is developed by CalCom Software. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

A3Sec CTEM and CalCom Hardening Suite (CHS) serve similar Exposure Management use cases: both are Exposure Management tools. Review the feature comparison above to determine which fits your requirements.