aDolus FACT Certificate Validation vs Cylus CylusOne: Side-by-Side Comparison (2026)

aDolus FACT Certificate Validation

Security teams protecting ICS/OT environments should use aDolus FACT Certificate Validation to detect fraudulent and stolen code signing certificates before malicious firmware reaches operational technology assets. The tool validates certificate chains and authenticates unsigned binaries across ICS software and firmware, addressing GV.SC supply chain risk management where most validation tools assume standard software distribution channels. Skip this if your organization runs primarily Windows/Linux endpoints in IT networks; the value concentrates in OT shops where firmware provenance verification is non-negotiable and certificate spoofing creates physical safety risk.

Cylus CylusOne

Rail operators at mid-market and enterprise scale should buy Cylus CylusOne if your network runs a mix of legacy and modern protocols and you need passive visibility without disrupting operations. The platform's passive asset discovery and DPI-based threat detection across railway-specific protocols, combined with IEC 62443-3-2 compliance support, directly addresses the visibility gap most rail teams face. Skip this if your primary concern is incident response automation or recovery orchestration; CylusOne excels at the ID and DE functions but offers limited RS capabilities, meaning you'll still need separate playbook execution tools downstream.