ENEnglish
LTLietuviškai
DEDeutsch
FRFrançais
RUРусский
ESEspañol
PLPolski
ITItaliano
UKУкраїнська
CSČeština
PTPortuguês
JA日本語
LVLatviešu valoda
ETEesti
HUMagyar
IDBahasa Indonesia
TRTürkçe
HIहिन्दी
ELΕλληνικά
ARالعربية
THไทย
VITiếng Việt
RORomână
MSBahasa Melayu
BNবাংলা#SSL certificate
Everything about SSL certificates for a website: issuing, renewing and checking them. Articles tagged here explain expiry warnings, certificate chains and domain mismatches. They show how automatic renewal works with common hosts. You will learn what visitors see when a certificate fails. Guides include steps to check your certificate in a minute. Read them before a warning appears in your customers’ browsers.
Oct 1, 2026 · 8 min readSSL Private Keys: How to Store, Protect and Replace Them
Your SSL certificate is only as safe as its private key. Learn where keys should live, who may access them, and what to do…
Oct 1, 2026 · 8 min readSelf-Signed SSL Certificates: When Are They Acceptable?
Self-signed certificates encrypt traffic but browsers do not trust them. Learn where they are acceptable, where they are risky, and the better free options.
Sep 25, 2026 · 7 min readSSL Certificates Are Moving to 47 Days: What Site Owners Must Do
Maximum SSL certificate lifetimes are falling step by step to 47 days by 2029. Learn the timeline, who is affected and how to prepare…
Sep 24, 2026 · 8 min readHow to Automate SSL Renewal With Certbot (and Verify It Works)
Set up Certbot so Let's Encrypt certificates renew automatically: timers, reload hooks, DNS challenges behind CDNs, dry runs and checks for silent failures.
Sep 22, 2026 · 7 min readWebsite Security Checks for Agencies: A Repeatable Client Process
A practical process for agencies to check client website security: baseline audits, monitoring, clear reports, responsibilities and turning findings into work.
Sep 20, 2026 · 7 min readCertificate Transparency Logs: Every Certificate for Your Domain
Every public SSL certificate is recorded in certificate transparency logs. Learn how to search them, what to look for and how to monitor your…
Sep 18, 2026 · 8 min readSSL Certificate Revocation: When and How to Revoke a Certificate
Revoking a certificate tells browsers to stop trusting it before it expires. Learn when revocation is needed, how CRLs and OCSP work and how…
Sep 17, 2026 · 8 min readSubdomain Takeover: How Forgotten DNS Records Get Hijacked
A DNS record pointing to a service you no longer use can let attackers take over your subdomain. Learn how subdomain takeover works and…
Sep 6, 2026 · 7 min readCDN SSL Modes Explained: Flexible vs Full vs Full (Strict)
Flexible, Full and Full (Strict) decide whether traffic between your CDN and server is encrypted and verified. Learn the risks and how to switch…
Sep 4, 2026 · 8 min readHow to Get an A Grade in an SSL Server Test: A Practical Guide
A poor SSL test grade usually comes from old protocols, weak ciphers, chain issues or missing HSTS. Learn what the tests check and how…
Sep 3, 2026 · 8 min readNET::ERR_CERT_AUTHORITY_INVALID: Causes and How to Fix It
ERR_CERT_AUTHORITY_INVALID means the browser does not trust who issued your certificate. Learn how self-signed certificates, chains and proxies cause it.
Sep 2, 2026 · 8 min readERR_SSL_PROTOCOL_ERROR: What It Means and How to Fix It
ERR_SSL_PROTOCOL_ERROR means the browser and server could not complete a secure handshake. Learn the causes on the server and visitor side and how to…