January 1999

TLS 1.0 standardized

RFC 2246 defined TLSTransport Layer Security — encryption that protects data in transit on the web and networks. 1.0 in January 1999 — the IETFInternet Engineering Task Force — develops RFC standards for TCP/IP, HTTP, DNS, and other internet protocols. standard that succeeded SSL for encrypted web and application traffic.

What it was for

HTTPSTLSTransport Layer Security — encryption that protects data in transit on the web and networks. wraps TCPTransmission Control Protocol — a reliable, connection-oriented protocol used on the internet. connections with encryption and identity verification — the padlock in your browser, `https://` APIs, and secure database links. Handshakes negotiate ciphers; certificates prove server identity. Every modern site, mobile app backend, and microservice mesh depends on TLSTransport Layer Security — encryption that protects data in transit on the web and networks. or its successors.

Companies

  • IETF

Why it's here

TLSTransport Layer Security — encryption that protects data in transit on the web and networks. 1.0 gave the internet a vendor-neutral standard for transport security after proprietary SSL wars.

Why it mattered

It made encrypted HTTPHyperText Transfer Protocol — the protocol browsers use to request and receive web pages. practical at scale and underpins e-commerce and APIApplication programming interface — a defined way for programs to talk to each other or to a service. security today.

What it solved

Proprietary SSL implementations fragmented; the web needed one auditable protocol for privacy on the wire.

Media

  • HTTPS
    ImageHTTPS

    IETF HTTP Working Group (HTTPbis), Public domain, via Wikimedia Commons

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