The Red Bridge Cyber Blog

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Practical guides for Australian business owners.

Plain-language guides on website security, email deliverability, SEO, and AI search visibility - written for non-technical business owners.

All Articles

40 articles
Domain6 min read

How to check your DNS records (and what each one does)

Look up any domain’s DNS records free in under a minute. What A, CNAME, MX, TXT, NS and CAA records do - and how to read your own.

2026-08-21
Security7 min read

How to add HTTPS to your website and fix "Not secure"

Adding HTTPS is free and usually one toggle. The work is the 2 steps after: forcing HTTP to redirect to HTTPS, and fixing the mixed content that keeps the warning up.

2026-08-19
Security6 min read

What is a content security policy?

A CSP tells the browser which sources it can load scripts, styles and images from - the most powerful security header, and the easiest to break your own site with.

2026-08-17
Security6 min read

What security headers should my small business website have?

The 5 security headers worth having on a small business website, what each one actually prevents, how to check yours in 30 seconds, and the exact request to send your developer.

2026-08-14
Visibility6 min read

Why isn’t my page showing on Google?

A page is usually missing from Google for one of a handful of reasons - too new, noindex, robots.txt, a stray canonical, or thin content. Here’s how to tell which.

2026-08-12
Security8 min read

Website security checklist for Australian small business: 7 things to verify yourself

The 7-point website security checklist for Australian small business owners: what each item is in plain English, how to check it free, and what good looks like - no penetration test required.

2026-08-11
Email6 min read

Are free website security scanners enough for a small business?

For a one-off check, free scanners are excellent. Their limits: they don’t correlate findings, don’t tell you what to fix first, and miss config that silently breaks.

2026-08-10
Speed7 min read

Lab data vs field data: why your speed scores disagree

Lab data is one simulated test on a fixed device; field data is what real visitors experienced. They disagree, and Google ranks on the field data.

2026-08-07
Domain7 min read

SSL certificate renewal for Australian small businesses

For most small-business sites, SSL certificate renewal is automatic and invisible - Let’s Encrypt certs renew every 90 days. A manual renewal or expiry warning is the tell.

2026-08-05