Glossary

HSTS (HTTP Strict Transport Security)

HSTS is an HTTP security header that instructs the browser to communicate with the server exclusively over HTTPS for a period defined by the max-age parameter.

Full Definition

HSTS protects against SSL stripping attacks, where an attacker downgrades communication to unencrypted HTTP. After the first HTTPS contact, the browser remembers the instruction and automatically upgrades all future requests. zipzipdoc uses HSTS with a max-age of one year, the recommended value for production sites.

Related terms

TLS

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