secunet Security Networks

secunet Security Networks is Germany’s leading IT security company and the long-standing technology partner of the German Federal Office for Information Security (BSI). Its flagship product line, SINA (Secure Inter-Network Architecture), was developed on behalf of the BSI to let government agencies and defense organizations process and transmit classified information across networks of different classification levels — a capability that remains rare among commercial vendors because it requires formal government security approval, not just a technical claim.

In May 2025, the BSI approved SINA Cloud’s relevant security functions for handling classified information up to and including GEHEIM (secret) level, making secunet one of the few vendors anywhere with a government-certified sovereign cloud offering at that classification tier. Beyond SINA, secunet’s business spans two segments — a Public Sector practice serving government, defense, and critical-infrastructure customers, and a Business Sector practice offering biometrics, e-government, and industrial security services to commercial clients.

secunet is listed on Germany’s SDAX and is majority owned by Giesecke+Devrient, giving it a level of financial transparency and institutional backing that most cybersecurity vendors in its space lack. Full-year 2025 group revenue rose 13% to roughly €459 million, with order intake up 26% and EBIT up 22% year-on-year — growth that is disclosed in audited public filings rather than press-release marketing. The tradeoff is that secunet’s core innovation is incremental and deeply tied to a specific national regulatory and procurement context; it is not attempting to disrupt the broader commercial security market so much as own the sovereign, government-grade segment of it.