abhörsichere

Abhörsichere describes devices, rooms, or practices that aim to prevent the interception of confidential information through eavesdropping. The term covers physical security measures, electronic shielding, and procedural controls designed to reduce the risk of leakage via audio, video, or data channels.

Technical approaches include physical design and acoustics such as soundproofing, vibration isolation, and controlled line of sight; electromagnetic shielding to limit RF emissions and prevent signal leakage; tamper-resistant hardware and secure power and network isolation; and the use of cryptographic protection for communications and data at rest. In some contexts, TEMPEST-like measures or standards for emanation security are referenced to minimize unintended electromagnetic emissions.

Applications are common in government facilities, courtrooms, boardrooms, data centers, and other environments where the confidentiality of discussions or sensitive information is paramount. Abhörsicherheit is typically achieved through a combination of architectural design, equipment selection, and organizational policies, including access controls, verification procedures, and employee training.

Limitations include the fact that no system is perfectly secure. Eavesdropping can exploit indirect or side channels (for example, acoustic leakage through structures or compromised endpoints), human factors, or supply-chain vulnerabilities. Costs and practicality often constrain the level of protection, requiring risk-based decisions.