332 practical guides to website speed, SEO, email deliverability, DNS, security and automation, with fixes you can copy and paste.
The CA/Browser Forum cut maximum TLS certificate lifetimes to 200 days in 2026, 100 in 2027 and 47 in 2029. Here is the schedule and how to prepare.
Fix expired certificates, name mismatches, incomplete chains and mixed content warnings with clear diagnosis steps and openssl, Nginx and Apache commands.
How HSTS forces HTTPS, how to choose max-age, when includeSubDomains is safe, and why the HSTS preload list is a commitment you cannot quickly undo.
Eight eMudhra intermediate CA keys were found to be weak in October 2026 and browsers pulled trust. How to check whether your SSL certificate is affected.
Check which TLS versions your server accepts, find out who still uses old ones, then disable TLS 1.0 and 1.1 on Apache, Nginx, IIS, cPanel and Cloudflare.
Post-quantum encryption for websites: harvest now, decrypt later, hybrid X25519MLKEM768 key exchange, NCSC timelines and the steps a small business needs.
How to check an SSL certificate's expiry date, issuer, hostnames and chain in your browser, with OpenSSL or an online SSL checker, and what to fix if it fails.
The first 200-day TLS certificates issued since March 2026 are now expiring. How websites should automate renewal before the 100-day cap in March 2027.
Learn what a CAA record does, how certificate authorities check it, and how to set CAA records for Let's Encrypt, Cloudflare and AWS without breaking renewals.
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