Articles
Learn about SSL certificates, CSR generation, and web security best practices.
Featured Articles
CSR.Plus vs Traditional Methods: Why Online CSR Generation is the Future
The Evolution of Certificate Signing Requests: Why CSR.Plus Outperforms Traditional Methods.
2026-04-09
Why Website Security Matters: Understanding SSL Certificates
Protect Your Online Presence: The Essential Role of SSL Certificates.
2026-04-09
The Ultimate Guide to Using CSR.Plus for SSL Certificate Generation
Streamline Your SSL Certificate Process with CSR.Plus: The Complete Guide.
2026-04-09
More Articles
HTTP/3 and QUIC Adoption Report 2026
HTTP/3 over QUIC has moved from experimental to standard. Data on adoption, TLS 1.3 coupling, CDN support and what site owners need to know to enable it safely.
2026-08-15
EV Certificates and Browser Trust Report 2026
Extended Validation certificates have lost most of their visible UI advantage in modern browsers. Data on EV usage trends and what the trust signals actually are in 2026.
2026-08-15
Certificate Transparency Growth Report 2026
Certificate Transparency logs now record billions of certificates. What CT means for domain owners, how to search logs, and what the 2026 data shows about issuance trends.
2026-08-15
Certificate Expiry Risk Report 2026
A large share of certificate-related outages are expiry incidents that were preventable with monitoring. Data on expiry risk, renewal failures and the 30-day warning rule.
2026-08-15
Let's Encrypt Market Share and E5/E6 Transition Report 2026
Let's Encrypt issues over 300 million active certificates. This report covers market share, the E5/E6 root transition, cross-signed chain migration and what operators must verify.
2026-08-15
HTTPS Adoption and TLS Deployment Report 2026
How much of the web is on HTTPS in 2026? Data on default protocol usage, TLS 1.2 vs 1.3 deployment, HSTS adoption and what the numbers mean for site owners.
2026-08-15
TLS Version and Cipher Mismatch: Negotiation Failures
When server and client support no common TLS version or cipher, the handshake fails with protocol errors. Learn to read OpenSSL output and align configurations.
2026-08-15
Self-Signed Certificates: Trust Errors in Browsers and Apps
Self-signed certificates trigger trust errors everywhere by design. Learn when they are acceptable, how to add them to trust stores, and how to use a private CA properly.
2026-08-15
Hostname Mismatch: SSL Common Name and SAN Errors
ERR_CERT_COMMON_NAME_INVALID means the certificate does not cover the hostname. Learn how SANs work, why old CN-only certificates break, and how to reissue correctly.
2026-08-15
"Your Connection Is Not Private": Every Cause and Fix
Chrome’s "your connection is not private" warning has five root causes. Learn which one you have and the exact fix — for site owners and for visitors.
2026-08-15
Certificate Expired: The Emergency Renewal Playbook
An expired certificate takes your site offline in seconds. Follow this playbook: verify expiry, renew or reissue, redeploy with correct chain, and prevent it from ever happening again.
2026-08-15
Mixed Content Errors: HTTPS Pages Loading HTTP Resources
Mixed content blocks insecure HTTP resources on HTTPS pages, breaking images, scripts and APIs. Learn to find them, fix URLs, and use CSP upgrade-insecure-requests.
2026-08-15
ERR_SSL_PROTOCOL_ERROR: Causes and Solutions
ERR_SSL_PROTOCOL_ERROR appears when the TLS handshake itself cannot complete. Cover the real causes: broken HTTPS redirects, port 443 issues, TLS version gaps and corrupted browser state.
2026-08-15
NET::ERR_CERT_AUTHORITY_INVALID: Complete Fix Guide
The certificate authority error means the browser cannot find a trusted issuer for the certificate. Fix the 5 real causes: missing intermediate, wrong cert on the server, expired chain, self-signed certs and corrupted trust stores.
2026-08-15
Incomplete Certificate Chain: The Missing Intermediate Fix
"unable to get local issuer certificate" means your server is missing the intermediate. Learn how to find, concatenate and deploy the correct chain on Nginx, Apache and CDNs.
2026-08-15
SSL Handshake Failed: 11 Causes and How to Fix Them
The SSL/TLS handshake fails for a limited set of reasons. Learn the 11 most common causes — certificate, cipher, SNI, protocol and network — and the exact fix for each.
2026-08-15
DV vs OV vs EV Certificates: What You Actually Pay For
Domain validation issues in minutes for a few dollars; extended validation proves legal identity after days of vetting. Understand exactly what each validation level buys you.
2026-08-15
RapidSSL vs Thawte: Simple DV or Enterprise OV/EV?
RapidSSL is a pure DV brand with cheap, simple certificates. Thawte focuses on OV/EV with higher warranties and enterprise credibility. Compare and decide.
2026-08-15
Sectigo vs GeoTrust: Price, Trust and Warranty Compared
Sectigo (ex-Comodo) is the price leader; GeoTrust carries one of the most widely trusted roots. Compare DV/OV/EV prices, warranties and issuance speed.
2026-08-15
PositiveSSL vs EssentialSSL: Which Sectigo DV Certificate Should You Buy?
Both PositiveSSL and EssentialSSL are Sectigo DV certificates. Compare prices, warranty, issuance speed and support to decide which one fits your website.
2026-08-15
TLS 1.2 Deprecation 2026: The Countdown Has Started
Apple, Google and Mozilla will remove TLS 1.2 trust from their roots by end of 2026. About 8% of sites still default to TLS 1.2. Here is the timeline and what you need to do.
2026-08-14
What is OCSP Stapling and How to Enable It
OCSP stapling speeds up TLS handshakes, protects visitor privacy and removes a single point of failure. Learn how it works and how to enable it on Nginx, Apache and Caddy.
2026-08-14
2026 SSL/TLS Adoption Report
We scanned the top 1 million websites to measure TLS 1.3 adoption, certificate authority market share, certificate lifetimes and signature algorithms in 2026.
2026-08-14
Common SSL Certificate Problems Solved with CSR.Plus
Troubleshooting SSL Certificate Issues: How CSR.Plus Eliminates Common Headaches.
2026-04-09
SSL Security Best Practices
The essential TLS hardening checklist for 2026: TLS 1.3 only, modern cipher suites, HSTS, OCSP stapling, key protection and automated renewal.
2026-04-08
Common SSL Errors
Fix the most common SSL/TLS errors: expired certificates, name mismatch, untrusted chains, mixed content and handshake failures, with step-by-step solutions.
2026-04-08
RSA vs ECDSA
Compare RSA and ECDSA certificate keys: security strength, handshake performance, client compatibility and practical advice for choosing between them in 2026.
2026-04-08
SSL Certificate Guide 2026
Everything about SSL/TLS certificates in 2026: DV, OV and EV differences, wildcard and multi-domain options, 90-day certificates, and how to pick the right one.
2026-04-08
How to Generate a CSR
A practical step-by-step guide to generating a Certificate Signing Request for Nginx, Apache, IIS, cPanel and OpenSSL, with key size and algorithm recommendations.
2026-04-08