What is TLS and how is it different from SSL?

D3 ยท Architecture  ยท  CompTIA Security+ SY0-701
TLS (Transport Layer Security) is the modern cryptographic protocol that secures data in transit. It is the successor to SSL (Secure Sockets Layer), which is now deprecated and considered insecure.

Current versions: TLS 1.2 (widely used) and TLS 1.3 (current standard โ€” faster, more secure). TLS 1.0 and 1.1 are deprecated.
When the exam says "SSL" in a question about modern HTTPS, they usually mean TLS. SSL is deprecated. HTTPS = HTTP over TLS. Port 443.
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