Website Security Basics Every Business Should Know

A hacked website can cost you customers, revenue, and reputation overnight. The good news: most attacks exploit basic, preventable weaknesses. Here are the website security fundamentals every business should have in place.

Use HTTPS everywhere

An SSL/TLS certificate encrypts data between your site and visitors, protects sensitive information, and is required for trust (and rankings). Most hosts and CDNs like Cloudflare offer free certificates via Let’s Encrypt. There’s no excuse for any site to run on plain HTTP today.

Keep everything updated

Outdated software is the leading cause of website compromise. Whether you run WordPress, a custom app, or a static site, keep your CMS, plugins, dependencies, and server software patched. Most breaches exploit known vulnerabilities that updates would have fixed.

Enforce strong authentication

Weak passwords are an open door. Require strong, unique passwords, enable two-factor authentication, and limit login attempts. The OWASP Top Ten — the industry-standard list of web risks — repeatedly highlights broken authentication as a top threat.

Understand common threats

A few attacks account for most incidents:

• SQL injection — malicious input that manipulates your database
• Cross-site scripting (XSS) — injecting harmful scripts into pages
• Brute-force attacks — automated password guessing
• DDoS — flooding your site to take it offline

The OWASP Top Ten and Google’s Web Fundamentals security guidance explain how to defend against each.

Validate and sanitise input

Never trust user input. Validate and sanitise everything that comes through forms, URLs, and APIs. This single practice prevents a large share of injection attacks.

Back up regularly

Even with strong defences, things go wrong. Automated, off-site backups mean you can restore quickly after an incident. Test your restores periodically — a backup you can’t restore is worthless.

Use a web application firewall

A WAF filters malicious traffic before it reaches your site and helps absorb DDoS attacks. Services like Cloudflare and Sucuri provide robust, affordable protection.

Limit access and permissions

Give each user only the access they need. Remove unused accounts, and never share a single admin login across a team. The principle of least privilege dramatically reduces risk.

Monitor and respond

Set up monitoring for downtime, file changes, and suspicious activity. Early detection turns a potential disaster into a minor cleanup — and is a core part of ongoing website maintenance.

Build security in

Security isn’t a one-time task; it’s an ongoing discipline. Bake it into how your site is built and maintained. Our web development service hardens every site we build and offers maintenance plans to keep it secure long after launch.