CyberGuard dictionary / Cryptography
Transport Layer Security
Also known as TLS
A protocol that protects the confidentiality and integrity of data exchanged over a network.
In simple terms
TLS is what helps keep a connection private between a browser and a website.
Technical explanation
During a handshake, endpoints negotiate keys and authenticate the server using certificates; the application then exchanges protected records.
TLS protects a connection between endpoints after certificate validation and handshake. It does not guarantee that the website itself is honest or that information remains protected after reaching the server.
Examples in practice
A browser connects to an HTTPS website and checks the site certificate before sending a password.
A browser displays a secure connection to a counterfeit shop because that domain has a valid certificate. The shopper still needs to verify the site's identity before entering payment details.
Why it matters
TLS protects transport but does not prove the website owner is trustworthy.
VERIFY & LEARN MORE
Sources and further reading
Published 2026-10-15 · Last updated 2026-10-15 · CyberGuard editorial content. Source links provide context; they do not imply endorsement.