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Notes from the CertPing team on domains, DNS, SSL certificates, email security and keeping a name safe.

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  1. Your Connection Is Not Private: What It Means and How to Fix It

    What the "Your connection is not private" warning means in Chrome, Edge, Safari and Firefox, how visitors can fix it in minutes, and how site owners fix expired, mismatched or incomplete SSL certificates.

    SSL errorsOwais Salauddin Khan4 min read

  2. SSL Certificate Validity Is Shrinking: 200 Days Now, 100 in 2027, 47 by 2029

    Public SSL certificates now last 200 days at most, and Let's Encrypt moves to 64 days on February 10, 2027. See the full timeline to 47 days in 2029, why it's happening and how to get your renewals ready.

    SSL certificatesOwais Salauddin Khan3 min read

  3. Certificate Monitoring: How to Stop Outages from Expired TLS Certificates

    Expired TLS certificates cause avoidable outages and scary browser warnings. Learn why spreadsheets fail, what good certificate monitoring looks like, and how to set it up.

    certificate monitoringChennarao Vemula5 min read

  4. Domain Security Guide: How to Stop Phishing, Email Spoofing and DNS Hijacking

    How attackers abuse your domain through look-alike domains, spoofed email and DNS hijacking, and how SPF, DKIM, DMARC, registrar lock and look-alike monitoring stop each one. Includes a safe DMARC rollout and a checklist.

    Domain securityOwais Salauddin Khan10 min read