Every aspect of an accredited CDS is usually evaluated under what is known as a Lab-Based Security Assessment (LBSA)[citation needed] to reduce potential vulnerabilities and risks.
CDS filter for viruses and malware; content examination utilities; in high-to-low security transfer audited human review.
This policy may be simple (e.g., antivirus scanning and whitelist (also known as an "allowlist") check before transfer between peer networks) or complex (e.g., multiple content filters and a human reviewer must examine, redact, and approve a document before release from a high-security domain[5]).
Though cross-domain solutions have, as of 2019, historically been most typical in military, intelligence, and law enforcement environments, one example is the flight control and infotainment systems on an airliner.
[10] These types are broken down into Access, Transfer, and Multi-level solutions (MLS) and all must be included in the cross-domain baseline list before Department of Defense-specific site implementations.