TLS
acronymcryptographynetworkingsecurity
Stands for: Transport Layer Security
The protocol that encrypts and authenticates most internet traffic, the S in HTTPS.
Transport Layer Security (the modern successor to SSL, current version 1.3 in RFC 8446) protects data in transit and verifies you are talking to the right server. It negotiates a cipher suite and, by default now, forward secrecy for each session.
Also known as: tls, ssl, https, transport layer security