Glasswall
London company selling zero-trust content disarm and reconstruction technology that rebuilds files to remove embedded malware.
Visit Website ↗ + Add to Compare Claim This CompanyOverview
Glasswall provides content disarm and reconstruction (CDR) technology, which rebuilds documents to a known-good standard rather than trying to detect malicious content. It ships as an embedded SDK engine, a server product called Halo that can run on-premises, in the cloud or air-gapped, and a desktop application.
In February 2025 it announced an integration of ReversingLabs threat intelligence into Halo so safe files are approved automatically and suspicious ones are blocked.
Innovation Matrix Assessment
Years of refinement of CDR with recent threat-intelligence integration; steady rather than rapid.
File sanitisation removes whole classes of file-borne threats without relying on signatures.
Government and commercial customers reported by profiles, but funding and adoption data are thin.
CDR changes the detect-versus-rebuild model, though it is an established niche.
Rebuild approach is sound in principle; independent test evidence was not located.
File-borne threats and air-gapped transfer needs persist.
Why CISOs Should Care
Neutralises malicious documents before users open them, including in air-gapped and cross-domain transfers.
What Makes It Different
Reconstructs files to a safe specification instead of scanning for known-bad content.
The Matrix Verdict
53/100 — INCREMENTAL INNOVATOR
Glasswall sits in the Incremental Innovator tier: a credible specialist in CDR with limited public independent evidence.
Editorial Note: Claims vs. Verified Findings
Effectiveness claims are vendor statements; the ReversingLabs integration is a partner-announced event. Funding and size data were not verified.
Sources
Alternatives to Glasswall
Fireblocks
The category-defining institutional digital-asset custody platform, combining MPC and hardware chip isolation to move roughly $2 trillion in…
Cyera
AI-powered, agentless data security platform combining DSPM, DLP, and AI-activity monitoring, and one of the fastest-funded startups in…
Halcyon
Ransomware-focused cyber resilience platform combining endpoint prevention, automated recovery, and data exfiltration protection.
SandboxAQ
Alphabet spinout building AQtive Guard, a cryptographic management platform helping enterprises inventory, assess and migrate to quantum-safe encryption.
Varonis
Data-centric security platform that monitors file, email, and cloud activity to detect insider threats and ransomware before data…
CyberRidge
Photonic-layer encryption that converts transmitted data into optical noise, defending fiber communications against quantum-era decryption.