7 Common WordPress Security Mistakes (And How to Fix Them)

WordPress powers a huge share of the web, which makes it a natural target for attackers. But here's the reassuring truth: the vast majority of WordPress hacks aren't sophisticated attacks. They come down to a handful of basic, avoidable mistakes. Fix these, and you eliminate most of your risk.

Here are the seven most common WordPress security mistakes — and exactly how to protect yourself from each.

1. Running outdated software

This is the single biggest cause of WordPress compromises. Every update to WordPress core, themes, and plugins often includes security patches. When you skip updates, you leave known vulnerabilities wide open — and attackers actively scan for them.

The fix: Keep everything updated, promptly. Enable automatic updates where safe, and test major updates on a staging site first. If you don't have time to manage this, a maintenance plan handles it for you.

2. Weak admin passwords

"password123" and reused passwords are an open door. Automated bots try thousands of common credentials against WordPress login pages every day.

The fix: Use a strong, unique password for every admin account, and enable two-factor authentication (2FA). This alone stops the overwhelming majority of brute-force attacks.

3. Using "admin" as your username

Many older WordPress installs default to the username "admin." Attackers know this, so they only have to guess your password — you've handed them half the login for free.

The fix: Never use "admin" (or your site name) as a username. Create administrator accounts with unique, non-obvious usernames.

4. Installing nulled or pirated plugins

"Free" versions of premium plugins from unofficial sources are one of the most common ways sites get infected. They're frequently bundled with hidden malware.

The fix: Only install plugins and themes from reputable sources — the official directory or trusted developers. If a premium plugin is worth using, it's worth paying for.

5. Plugin bloat

Every plugin you install is more code that could contain a vulnerability. Sites with dozens of plugins — especially abandoned or rarely-updated ones — have a much larger attack surface.

The fix: Audit your plugins ruthlessly. Remove anything you don't actively need, and prefer well-maintained plugins with recent updates and good reputations. Fewer, better plugins also means a faster site.

6. No backups

Even with strong security, things can go wrong. Without backups, a hack, a bad update, or a server failure can wipe out your site permanently.

The fix: Run automated backups stored off-site, and test that you can actually restore from them. Backups turn a potential catastrophe into a minor inconvenience.

7. No firewall or malware scanning

Relying on WordPress's built-in protections alone leaves gaps. Without a firewall to block malicious traffic and scanning to detect intrusions, problems can go unnoticed until it's too late.

The fix: Install a reputable security plugin or use a web application firewall (WAF) that blocks malicious requests and scans for malware. This adds a crucial layer of active protection.

The simplest protection of all

Notice a theme: none of these fixes are complicated. WordPress security is mostly about consistent, basic hygiene — updates, strong passwords, reputable plugins, backups, and a firewall. The problem is that "consistent" is hard when you're busy running a business.

That's why many businesses hand security to a maintenance and support partner who handles updates, backups, monitoring, and hardening automatically — so you're protected without having to think about it every day.

The bottom line

The overwhelming majority of WordPress hacks are preventable. Keep everything updated, use strong passwords with 2FA, avoid pirated plugins, trim plugin bloat, back up regularly, and add a firewall. Do those things consistently and your site will be safer than the vast majority of the web.

Want your WordPress site secured and maintained properly? Get a free quote, or read our complete guide to WordPress development for the full picture.