Sasa Software GateScanner Security Dome vs Tectia SSH Server for IBM z/OS: Side-by-Side Comparison (2026)

Short answer

SMB and mid-market teams handling sensitive file transfers across hybrid environments need GateScanner Security Dome for its CDR sanitization engine, which strips malware from files without requiring endpoint agents or complex infrastructure redesigns. The platform's multi-tenant architecture and portable media controls address the real compliance gap most organizations face: securing file movement across web, cloud storage, and USB channels simultaneously. Skip this if your priority is detecting advanced threats in network traffic or endpoint behavior; GateScanner focuses exclusively on file content security and storage, not lateral movement or persistence. Enterprise security teams managing mainframe data transfer pipelines need Tectia SSH Server for IBM z/OS because it's the only purpose-built SSH implementation that doesn't treat z/OS as an afterthought in your secure file transfer architecture. It covers both PR.DS (data security in transit) and PR.IR (infrastructure resilience) under NIST CSF 2.0, which matters because mainframe compliance audits actually check encryption logs at that level of specificity. Skip this if your organization is still centralizing all file transfer through x86-based gateways; Tectia only makes sense when you've committed to native mainframe security controls.