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Hướng dẫn về sức khỏe website, SEO, tốc độ, SSL và khả năng gửi e-mail vào hộp thư đến.
17 thg 8, 2026 · 8 phút đọcClickjacking Protection: X-Frame-Options vs frame-ancestors
Clickjacking tricks visitors into clicking hidden buttons on your site inside another page. Learn how X-Frame-Options and CSP frame-ancestors stop it.
17 thg 8, 2026 · 8 phút đọcInternal Linking for SEO: A Practical Guide for Small Sites
How internal links help visitors and search engines, how to plan a simple link structure, write good anchor text and fix orphan pages and…
17 thg 8, 2026 · 8 phút đọcDo You Need a CDN? A Plain-Language Guide for Site Owners
A CDN serves your files from servers near your visitors. Learn what it speeds up, when a small business site benefits, what it cannot…
16 thg 8, 2026 · 8 phút đọcEmail Spoofing: How to Stop People Sending Mail as Your Domain
Criminals can send e-mail that looks like it comes from your domain. Learn how spoofing works, which records stop it and what DMARC cannot…
16 thg 8, 2026 · 8 phút đọcExposed Software Versions: How to Hide Server and CMS Details
Server, PHP and CMS version numbers in headers and page code help attackers pick targets. Learn where versions leak and how to hide them…
16 thg 8, 2026 · 8 phút đọcSEO Audit Checklist for Small Business Websites
A practical SEO audit checklist for small business websites: indexing, crawling, on-page basics, links, content and local signals, in the order worth fixing.
16 thg 8, 2026 · 7 phút đọcPage Caching Explained: How to Speed Up a Dynamic Website
Page caching serves ready-made HTML instead of rebuilding each page. Learn how it works, what to exclude, how to clear it safely and which…
15 thg 8, 2026 · 8 phút đọcMicrosoft 365 Email Authentication: SPF, DKIM and DMARC Setup
A practical guide to SPF, DKIM and DMARC for Microsoft 365: the records to publish, how to enable DKIM in the Defender portal and…
15 thg 8, 2026 · 8 phút đọcTLS 1.0 and 1.1 Are Obsolete: How to Disable Them Safely
Old TLS versions are deprecated and flagged in every security test. Learn which TLS versions to allow, how to disable 1.0 and 1.1, and…
15 thg 8, 2026 · 8 phút đọcHow to Set Up Google Search Console for a Small Business
Step-by-step Google Search Console setup for small businesses: choosing a property, verifying ownership, submitting a sitemap and the first reports to read.
14 thg 8, 2026 · 8 phút đọcBrowser Caching Explained: How to Set Cache-Control Headers
Browser caching lets returning visitors skip re-downloading files. Learn how Cache-Control works, which lifetimes to use and how to update files safely.
14 thg 8, 2026 · 8 phút đọcGoogle Workspace SPF, DKIM and DMARC Setup, Step by Step
Set up SPF, DKIM and DMARC correctly for Google Workspace: the exact records, where to enable DKIM signing, and how to confirm everything passes…