Transport Layer Security
Noun · Security & Infosec
Definitions
The cryptographic protocol family used to secure network sessions such as HTTPS, SMTP, and VPN traffic. It shows up in application security, identity, infrastructure, or incident response work depending on the environment. Teams use the concept to prevent abuse, detect adversary activity earlier, or define stronger control boundaries during engineering, testing, and operations.
In plain English: Transport Layer Security is the practical security idea behind a control, weakness, or safeguard. It matters because it changes how attackers succeed or defenders reduce risk.
Example: "During the review, the team focused on Transport Layer Security after telemetry and testing showed it was the fastest way to reduce exposure, tighten controls, and close a realistic attack path before the next production release."