If your website runs on WordPress, an automated bot is likely scanning it right now, checking for known weaknesses. These aren’t human attackers targeting your business specifically. They’re software tools running through millions of sites, looking for any with a vulnerability. If your site has any of the mistakes below, they’ll find them.
Why WordPress Security Matters More Than You Think
WordPress’s popularity, powering roughly 41% of websites according to W3Techs, is exactly why it’s such a high-value target. The UK Government’s Cyber Security Breaches Survey 2025/2026 found that 43% of UK businesses reported a security breach or attack in the past 12 months, around 612,000 organisations. Not all of those came through a website, but a poorly maintained WordPress site is one of the most commonly exploited entry points.
Patchstack’s 2026 State of WordPress Security report adds a sharper edge to that: new WordPress vulnerabilities rose 42% year on year, highly exploitable ones rose 113%, and the weighted median time to first exploitation of a heavily targeted vulnerability is just five hours after it becomes public. Roughly half of high-impact vulnerabilities are exploited within 24 hours. Waiting a week to apply an update is no longer a safe margin, and for most sites, it never really was.
There’s a legal dimension too. If your website handles personal data, contact form submissions, email sign-ups, or customer enquiries all count, a breach could trigger your obligations under UK GDPR. The maximum fine is £17.5 million or 4% of global annual turnover, whichever is higher, and the ICO can issue substantial penalties where a breach happens because an organisation failed to take adequate technical security measures. Your website is part of your data processing setup whether you think about it in those terms or not, and our WordPress GDPR compliance guide covers what that means in more detail.
The Five Mistakes Behind Most WordPress Hacks
1Not Keeping WordPress, Plugins, and Themes Updated
The overwhelming majority of WordPress vulnerabilities, 91% according to Patchstack’s 2026 data, are found in plugins rather than WordPress core, which itself had only a handful of minor issues reported all year. When a plugin vulnerability is disclosed, the same disclosure that tells developers to patch it also tells attackers exactly where to look. With mass exploitation beginning in a matter of hours, not days, running an outdated version after a vulnerability is public is leaving the door open on purpose.
Keeping WordPress core, your theme, and every active plugin up to date is the single most effective step your business can take. The NCSC’s 10 Steps to Cyber Security consistently places patch management among the top priorities for any organisation. If you’re not doing this promptly and consistently, everything else matters less.
2Weak Passwords and Default Admin Usernames
Brute force attacks on WordPress login pages are constant and automated, running through common username and password combinations around the clock. Default usernames like “admin”, “test”, or “administrator” are the first entries on every attacker’s list. If yours is still one of those, paired with a short, memorable password, your site is an easy target.
The fix is straightforward: change your admin username to something unique, use a long and complex password, and set a limit on login attempts so bots can’t keep hammering the login page. Adding two-factor authentication takes around five minutes to set up and makes brute force attacks near-impossible to carry out successfully.
3No Reliable Backup System
If your site is compromised and you don’t have a clean backup, recovery becomes a long and expensive process. You may lose pages, content, and customer data that can’t be recovered, and rebuilding from scratch costs time and money on top of search rankings that can take weeks to return even once the technical issue is fixed.
Backups stored on the same server as your website are close to useless in a serious hack, since attackers often compromise the whole server environment, backup included. You need off-site or cloud-based backups, taken frequently enough that you wouldn’t lose weeks of content if the worst happened.
4Too Many Plugins You Don’t Actually Use
Every plugin installed adds to your attack surface, whether it’s active or not. Many businesses install a plugin to solve a one-off problem and then forget it exists. Those forgotten plugins sit on the server, often unpatched, and given that plugins account for the vast majority of new vulnerabilities, that’s exactly where the risk concentrates.
A deactivated plugin is not a safe plugin. Its files are still on the server and can still be exploited. Reviewing what’s installed and removing anything not actively in use is a habit worth building. If you can’t remember why a plugin is there, that’s a strong sign it should go.
5No Control Over Who Has Admin Access
Every admin account is a potential entry point. A web developer you worked with a couple of years ago who still has full admin credentials, or a former employee whose login was never removed, is a live vulnerability you might not even know about.
WordPress has different user roles for good reason. An editor doesn’t need admin rights, and a copywriter doesn’t need to install plugins. Review your user list regularly, remove accounts that are no longer needed, and make sure each person has only the access their role actually requires. It’s one of the quickest security improvements available, and one of the most commonly overlooked.
Quick WordPress Security Checklist
- WordPress core, theme, and every active plugin are on their latest version
- The admin username is not “admin” and every password is long, unique, and not reused elsewhere
- Login attempts are rate-limited and two-factor authentication is switched on for admin accounts
- Backups run automatically, are stored off-site or in the cloud, and have actually been tested with a restore
- Every installed plugin is one you can name a current reason for keeping
- The user list has been checked in the last few months and any account that shouldn’t still have access has been removed
- The site has a valid SSL certificate, covered in our SSL certificate guide, and it’s set to renew automatically
What These Mistakes Mean Under UK GDPR
If your WordPress website collects any personal data at all, a successful attack becomes a data protection issue, not just a technical one. A contact form, booking system, or sign-up page means you’re processing personal information, and a breach resulting from inadequate security measures puts you at risk of regulatory action.
UK GDPR requires certain types of breach to be reported to the ICO within 72 hours of becoming aware of it. Missing that window, or not having appropriate technical measures in place to begin with, makes the situation worse. Poor website security doesn’t have to be malicious to result in consequences. It just has to be negligent.
How to Fix This Without It Taking Over Your Time
None of these five mistakes needs a major overhaul to address. Most can be fixed in stages, and having someone look after your WordPress site on an ongoing basis means they don’t quietly return over time.
Our WordPress maintenance services cover updates, backups, security monitoring, and access management, keeping your site protected without you having to check it manually. If you think your site may already be compromised, our WordPress malware removal service cleans it up properly and hardens it against repeat attacks.
For ongoing protection, a WordPress care plan gives you consistent cover rather than reactive fixes when something goes wrong. If you want broader security for your business beyond the website itself, our cyber security services cover the business level too, and if you’d rather start with a broader health check, our IT audit checklist is a good place to see where else things might be slipping.
Frequently Asked Questions
How do I know if my WordPress website has been hacked?
Common signs include the site redirecting visitors elsewhere, search engines flagging it as dangerous, unexpected admin users appearing in your dashboard, or the site running noticeably slower than usual. Your hosting provider may also warn you about suspicious activity. If anything feels off, get it checked quickly rather than waiting to see if it resolves itself.
How often should I update WordPress plugins?
As soon as updates are available. Plugin updates frequently contain security patches for known vulnerabilities, and with mass exploitation now beginning within hours of disclosure, leaving a plugin unpatched gives attackers a known entry point almost immediately. A managed WordPress maintenance service applies updates promptly and checks nothing has broken as a result.
Is WordPress secure enough for a business website?
WordPress core is actively maintained and receives regular security patches; it accounted for only a handful of minor vulnerabilities in the whole of 2025. The risk comes almost entirely from how individual sites, and their plugins, are set up and looked after. A site that’s kept up to date, uses strong access controls, has reliable backups, and is monitored is a sound platform for a business. One that’s left to run itself is a different situation.
What should I do if my WordPress site gets hacked?
Take the site offline if you can, to stop it spreading malware to visitors, and contact your hosting provider straight away. Don’t attempt to clean it yourself unless you have the technical knowledge to do so thoroughly; partial clean-ups often miss backdoors attackers leave behind. A professional malware removal service will clean the site properly and address the vulnerability used to gain access.
Do I need a WordPress security plugin?
A security plugin adds a useful layer of protection but isn’t a replacement for proper maintenance. It can block brute force attacks, scan for malware, and flag suspicious activity, but it works best as part of a broader approach that includes regular updates, strong passwords, controlled access, and reliable backups. A plugin alone won’t protect a site that hasn’t been updated in months.
How much does WordPress security cost?
It depends on the level of cover needed. A managed WordPress care plan typically starts from around £50 a month, covering updates, backups, security monitoring, and support. Dealing with a hack after the fact, malware removal, potential data loss, and damage to search rankings and reputation, almost always costs significantly more. Prevention tends to be far cheaper than recovery.
Not Sure Where Your WordPress Site Stands?
Get a free consultation and find out exactly what needs fixing, in order of priority.
None of the five mistakes above are complicated to fix, and most take far less time than dealing with the aftermath of a hack. Work through the checklist, note what you can’t confidently tick, and treat that as the starting point for getting your WordPress site properly looked after.