Transport Layer Security version 1.3 is no longer optional. As of 2026, TLS 1.0 and 1.1 are completely broken, and TLS 1.2 has known vulnerabilities that sophisticated threat actors actively exploit. This article covers the mandatory migration path.
Why TLS 1.2 Must Die
TLS 1.2 still allows cipher suites that enable BEAST, POODLE, and LUCKY13 attacks under specific conditions. The removal of RSA key exchange in TLS 1.3 alone eliminates an entire class of passive decryption attacks.
OpenBSD httpd Configuration for TLS 1.3 Only
server "cybersecurity.navy" {
listen on * tls port 443
tls {
certificate "/etc/ssl/cybersecurity.navy.crt"
key "/etc/ssl/private/cybersecurity.navy.key"
# TLS 1.3 ONLY โ no fallback
protocols { TLSv1.3 }
ciphers "TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256"
}
}