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BNবাংলাセキュリティとSSL
The security basics every website should have, explained without jargon. We cover SSL certificates and their expiry, HTTPS redirects, security headers and software versions that should not be visible. Articles show what visitors see when something is wrong and how browsers warn them away. Each guide gives clear steps you can hand to your host or developer. We also explain how monitoring catches an expiring certificate before customers notice. A safe site protects both your visitors and your search rankings.
2026/09/04 · 8分で読めますHow 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…
2026/09/03 · 8分で読めますNET::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.
2026/09/02 · 8分で読めますERR_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…
2026/09/01 · 8分で読めますCAA Records Explained: Control Who Can Issue Your Certificates
A CAA DNS record lists which certificate authorities may issue certificates for your domain. Learn how it works, how to set it up and…
2026/08/31 · 8分で読めますsecurity.txt: How to Add a Security Contact to Your Website
A security.txt file tells researchers how to report vulnerabilities on your site. Learn the required fields, where to place it and how to handle…
2026/08/30 · 8分で読めますDirectory Listing Enabled? How to Disable It on Any Server
Open directory listings let anyone browse your folders, backups and uploads. Learn how to find them and disable them on Apache, Nginx, IIS and…
2026/08/29 · 8分で読めますExposed .env, .git and Backup Files: How to Find and Block Them
Publicly reachable .env files, .git folders and old backups can leak passwords and source code. Learn how to find them on your site and…
2026/08/28 · 8分で読めます“Deceptive Site Ahead” Warning: Causes and How to Remove It
A red Deceptive site ahead screen blocks almost all visitors. Learn why Safe Browsing flags sites, how to find the cause and how to…
2026/08/27 · 8分で読めますWebsite Hacked? A Step-by-Step Recovery Plan for Owners
A calm, ordered plan for recovering a hacked website: contain the damage, clean or restore, close the entry point, remove warnings and prevent a…
2026/08/25 · 8分で読めます9 Signs Your Website Has Been Hacked (and How to Check)
Hacked websites rarely announce themselves. Learn the nine most common warning signs, how to check each one in minutes, and what to do if…
2026/08/24 · 7分で読めますSSL vs TLS: What Is the Difference and Why It Still Matters
SSL and TLS are used as synonyms, but SSL is long obsolete. Learn how they differ, which versions are safe today and what "SSL…
2026/08/23 · 8分で読めますSecure Cookies Explained: Secure, HttpOnly and SameSite Flags
Cookie flags decide whether session cookies can leak over HTTP, be read by scripts or travel with cross-site requests. Learn what to set and…