TLS: Transport Layer Security in Cybersecurity

Networking
ByDecipherU Editorial
How is it pronounced?
tee-el-ess

TLS stands for Transport Layer Security. TLS is a cryptographic protocol that encrypts data in transit between two endpoints. It replaced SSL and protects web traffic, email, and other communications.

How TLS Is Used in Cybersecurity

Cybersecurity teams enforce TLS across all public-facing services to prevent eavesdropping and man-in-the-middle attacks. SOC analysts monitor for TLS misconfigurations and expired certificates. Security engineers configure TLS policies on load balancers, APIs, and internal microservices.

Read the full glossary entry: TLS/SSL in Cybersecurity

Cybersecurity Roles That Work with TLS

Related Cybersecurity Acronyms

Frequently asked questions

What does TLS stand for?

TLS stands for Transport Layer Security. TLS is a cryptographic protocol that encrypts data in transit between two endpoints. It replaced SSL and protects web traffic, email, and other communications.

What is TLS used for in cybersecurity?

Cybersecurity teams enforce TLS across all public-facing services to prevent eavesdropping and man-in-the-middle attacks. SOC analysts monitor for TLS misconfigurations and expired certificates. Security engineers configure TLS policies on load balancers, APIs, and internal microservices.

Last verified: April 2026?Report an inaccuracy