Getting an email from your hosting provider saying your site “contains malware” is unsettling, especially when you have not knowingly done anything wrong. In practice, malicious code rarely gets added on purpose: it usually slips in through an outdated plugin or theme, a nulled/pirated download from an untrusted source, a weak admin password targeted by a brute-force attack, or a vulnerability in a plugin that has not been updated in a while.
Hackers inject malware into WordPress sites for fairly predictable reasons:
- Redirecting your visitors to unwanted or malicious sites (the classic “WordPress malware redirect hack”).
- Harvesting personal information such as passwords, names and email addresses.
- Quietly tracking visitor behavior for their own purposes.
- Injecting their own ads, spam links or SEO spam pages into your site.
Below are six scanners worth using in 2026 to check your site’s vulnerability and catch problems early, before they turn into a blacklisting or a cleanup emergency.
Sucuri SiteCheck
Sucuri’s free SiteCheck scanner runs a remote scan of your site: you enter your URL and it checks your homepage the way a search engine crawler would, extracting links, JavaScript files and iframes along the way. It flags malware, defacements, blacklist status, outdated software and other website errors, and gives you a report with recommendations.
Because it scans remotely rather than accessing your server directly, it will not catch anything malicious that never shows up in the browser, so it will not detect phishing pages or backdoors hidden deeper in your files.
Wordfence
Wordfence is one of the most widely used WordPress security plugins, combining a firewall with a malware scanner that checks your core files, themes and plugins against a regularly updated threat database, including exploit detection. The free version covers scanning well; note that malware removal itself is not included on the free or standard premium plan ($149/year) — a separate Care plan adds professional cleanup if you are ever infected.
MalCare
MalCare takes a different approach: scanning happens on MalCare’s own servers rather than yours, so a deep scan will not slow down your site the way an on-server scanner can. It checks every file and your database daily. Detection is free; the paid plans ($99/year for detection with more depth, $299/year to include automatic malware removal) are worth considering if you would rather not clean an infected site by hand.
Jetpack Protect
Jetpack Protect, from Automattic (WordPress.com’s parent company), is a genuinely free scanner with no feature-limited catch: it checks your site daily against more than 37,000 known malware signatures, using the same underlying database as WPScan, and flags vulnerable plugins and themes with clear guidance on what to do next. Like MalCare, scanning runs on Jetpack’s servers rather than yours. The free version detects but does not remove malware automatically; Jetpack Scan ($9/month) adds one-click removal.
Quttera ThreatSign
Quttera’s WordPress plugin (now branded ThreatSign) checks your files and database for signs of compromise, including malicious code, suspicious redirects and known exploit patterns. It is a solid, focused option if you mainly want detection: once it confirms an infection, you will still need to remove the flagged files yourself or bring in help.
Astra Security Suite
Astra combines a firewall with malware scanning and, on paid plans, malware removal. The free version scans for backdoors, SEO spam infections, blacklist status, hidden crypto miners and credit-card phishing scripts, which covers a lot of common attack types for a no-cost tier. The paid plan adds a real-time web application firewall, automated scanning, vulnerability assessment and guaranteed malware cleanup if your site does get hacked.
Which one should you actually use?
For most small sites, a free scanner like Jetpack Protect or Wordfence is enough to catch problems early, since the real risk is not knowing you have been compromised, not the scanner’s price tag. If your site handles customer data, payments or a lot of traffic, the extra cost of a plan that includes automatic malware removal (MalCare or Astra, for example) is usually worth it: it turns a potential multi-day emergency into a same-day fix. Whichever you choose, running one scanner consistently beats running several occasionally.
If you have not created your website yet, you may be interested in Create Your Website With WordPress.
Once your site is up and running, give it a polished look with one of our WordPress themes for creatives. You may also like: Best WordPress Backup Plugins.
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