TrustedFilter® by 4Secure is a cybersecurity software suite designed for the secure and controlled transfer of data between network environments with differing security classifications, such as IT and OT systems. The software normalizes, inspects, and verifies data at the content level by transforming application-layer protocols into structured formats for syntactic and semantic verification. This process terminates the original protocol to obscure source network details while enforcing one-way or strict policy-driven data exchanges, operating alongside traditional security frameworks to prevent unauthorized data flows.
The suite is applied to protect systems within critical infrastructure sectors and functions with hardware such as unidirectional gateways and data diodes. It consists of distinct modules to facilitate specific data transfer requirements, including high-throughput file importing, proxying bi-directional TCP applications over unidirectional hardware, and near real-time screen replication. These capabilities enable secure file transfers, remote management, and data visibility across isolated or air-gapped domains, supporting the integration of industrial control systems with enterprise networks.
