Adding a new plugin to your WordPress site is like giving someone the keys to your house. Most of the time, they are there to help you build an extension or fix the plumbing. But if you aren’t careful about who you let in, you could be opening the door to security vulnerabilities, malware, and hackers.
When an insecure plugin (or an outdated theme or WordPress core) creates a vulnerability on your website, hackers rarely use it to shut your site down; instead, they hijack your hard-earned traffic. The two most common results of these breaches are SEO spam and malicious redirects. In an SEO spam attack, hackers inject malicious code into your site’s files and database to quietly generate thousands of hidden blog posts. These dummy pages leech off your site’s credibility to manipulate search engine rankings, ultimately directing unsuspecting searchers to illicit sites promoting pornography or illegal gambling. The second major threat is the malicious redirect. In this scenario, the injected code actively hijacks your incoming traffic, instantly rerouting your actual visitors away from your legitimate content and landing them on sketchy third-party domains or spam sites. Both of these attacks can permanently damage your SEO and destroy your brand’s reputation, making strict plugin vetting absolutely essential.
Plugins are the biggest source of security breaches in the WordPress ecosystem. Fortunately, you don’t need to be a coding expert to keep your site safe.
Here is a straightforward checklist to help you verify that a WordPress plugin is secure, supported, and safe to install.
1. Only Download from Reputable Sources
The golden rule of WordPress security is to be extremely picky about where you get your plugins.
The Official WordPress Repository
If you are looking for a free plugin, always get it directly from the WordPress.org plugin directory. Every plugin here goes through an initial code review before being published.
Trusted Premium Developers
If you are buying a premium plugin, buy it directly from the developer’s official website or a reputable marketplace.
Avoid “Nulled” Plugins
Never download premium plugins for free from sketchy third-party websites (known as nulled plugins). These are almost always bundled with malware or backdoors designed to hijack your site.
2. Check the “Last Updated” Date
Technology moves fast, and WordPress pushes out major core updates several times a year. If a plugin hasn’t been updated by its developer in a long time, it’s a massive red flag. Exposed security vulnerabilities allow a backdoor into your site that allows hackers to inject malicious code into your website server files.
When viewing a plugin in the WordPress repository, look at the Last Updated metric.
Safe
Updated within the last 1 to 3 months.
Use Caution
Updated 4 to 12 months ago.
Avoid
Hasn’t been updated in over a year. Abandoned plugins are prime targets for hackers because when new vulnerabilities are discovered, no one is around to patch them.
3. Verify WordPress Version Compatibility
Right next to the “Last Updated” date, you will see a Tested up to metric. This tells you the latest version of WordPress that the developer has confirmed works smoothly with their plugin.
If the plugin is not tested with the current major release of WordPress, it might break your site’s functionality or introduce unexpected security flaws. Always ensure the plugin is compatible with the version of WordPress you are currently running.
4. Look at Active Installations and Reviews
Social proof is a great indicator of a plugin’s safety and reliability.
Active Installations
A plugin with 100,000+ active installations has a massive community testing it daily. If there’s a critical security flaw, it usually gets caught and patched quickly. Be very cautious with plugins that have fewer than 1,000 active installs unless you trust the developer.
Ratings and Reviews
Take a few minutes to read the 1-star and 2-star reviews. Are users complaining about their sites breaking or getting hacked? Or are the low ratings just about minor feature requests?
5. Check the Support Forum Activity
A secure plugin is a supported plugin. In the WordPress directory, click on the Support tab for the plugin you are considering.
Look at the recent threads:
- Are users getting answers?
- Is the developer actively responding to bug reports?
- Are there unresolved threads titled “Fatal Error” or “Security Issue”?
A developer who is active in their support forum is much more likely to release quick patches if a vulnerability is discovered.
6. Consult a Vulnerability Database
If you want to be completely thorough, especially for critical business websites, you can cross-reference the plugin with a WordPress vulnerability database.
Sites like Wordfence Intelligence maintain searchable databases of known WordPress vulnerabilities. Before installing a new tool, type its name into one of these databases to see if it has a history of severe, unpatched security flaws.
7. Post-Installation Best Practices
Choosing a safe plugin is only half the battle. To keep your WordPress website completely secure, remember these three rules:
Keep them updated
When a plugin update is available, run it. Updates often contain critical security patches.
Delete unused plugins
Don’t just deactivate plugins you no longer use; delete them entirely. Deactivated plugins still contain code on your server that hackers can exploit.
Use a security plugin
Install a reputable security plugin (like Wordfence, or Sucuri) to scan your site daily and firewall against malicious traffic.
You wouldn’t hand the keys to your business to a stranger, and your WordPress site deserves that same level of cautious protection. By thoroughly vetting every plugin before you hit install and sticking to a routine maintenance schedule, you can safeguard your hard-earned SEO, protect your brand’s reputation, and enjoy complete peace of mind.
If managing website security feels like a full-time job you didn’t sign up for, our team is always here to help. Reach out to us today, and let’s make sure your digital doors stay tightly locked to hackers and open for your actual customers.
