WF Sentinel
Free WordPress plugin with global threat intelligence
Protect your WordPress site against brute-force, SQL injection, XSS and vulnerability scanning. Shares anonymized threat data globally to protect everyone.
Version 2.0 • 2.5 MB • Installs in 5 minutes
What is WF Sentinel?
WF Sentinel is a free WordPress plugin that protects your site against direct attacks. Unlike traditional security plugins, WF Sentinel shares anonymized attack data with WF SecurityCloud's global network — which means that when your site blocks an attack, you help thousands of other sites stay secure.
Unique advantage: When an attack is detected on a site in the USA, WF Sentinel shares it with WF SecurityCloud, which immediately protects ALL customers globally — including your site in Sweden — against the same threat.
Features
Brute-force protection
Blocks automatic password guessing against wp-login.php and wp-admin.
Vulnerability scanning
Stops scanners looking for vulnerable plugins and themes.
SQL Injection
Detects and blocks SQL injection attempts in real-time.
XSS Protection
Protects against Cross-Site Scripting attacks.
File protection
Blocks unauthorized access to .htaccess, wp-config.php and other sensitive files.
Global data sharing
Shares anonymized attack data to protect all users worldwide.
Multilingual
Blocking messages in 10+ languages: Swedish, English, German, French, Spanish, and more.
Statistics
See exactly which attacks were blocked, from which IP addresses and when.
Installation
WF Sentinel installs in 5 minutes. Follow these simple steps:
Download plugin
Use the download button to get WF Sentinel 2.0 (ZIP file, 2.5 MB). The file is saved in your Downloads folder.
Upload to WordPress
Log in to your WordPress admin. Go to Plugins → Add new → Upload plugin. Click "Choose file" and select the downloaded wf_sentinel_2.0.zip file.
Activate plugin
After uploading, click "Activate plugin". WF Sentinel immediately starts protecting your site against attacks.
Verify and configure
Go to Settings → WF Sentinel to see statistics about blocked attacks. Here you can also choose the language for blocking messages (default is Swedish/English depending on the visitor's browser).
Done! Your WordPress site is now protected by WF Sentinel. The plugin updates automatically when new threats are discovered in the global network.
This is what it looks like when WF Sentinel blocks
Professional blocking message shown to attackers in their language
WF Sentinel vs WF SecurityCloud
Both products protect, but in different ways. Here are the differences:
| Feature | WF Sentinel | WF SecurityCloud |
|---|---|---|
| Price | Free | 99 kr/mån |
| Protection type | Local (only your site) | Global (all customers) |
| Platform | WordPress | Windows, WordPress, API |
| When protection occurs | When attack occurs | BEFORE attack reaches you |
| Sensors | Shares data to network | 201 sensors in 50+ countries |
| Email protection | - | ✅ Phishing & malware |
| Dashboard | WordPress admin | Web-based with full control |
| Best for | Individual WordPress sites | Companies, multiple devices |
Recommendation: Use both! WF Sentinel provides local protection for WordPress while WF SecurityCloud provides preventive global protection. Together they provide maximum defense.
Frequently asked questions
Is WF Sentinel really free?
Yes, WF Sentinel is 100% free. No hidden fees, no limited trial period, no premium versions. The plugin shares anonymized threat data with WF SecurityCloud's global network to protect all users, which is our business model — giving back to the community.
Does WF Sentinel work without WF SecurityCloud?
Yes, WF Sentinel works completely independently and provides good basic protection against the most common attacks. But combined with WF SecurityCloud you get both local AND global preventive protection, which provides maximum defense.
What data does WF Sentinel share?
WF Sentinel ONLY shares anonymized attack data: IP addresses (hashed with salt), request patterns, attack type and timestamp. NO personal data, no files, no content from your site or your visitors is ever shared. Read more on our Privacy & Data page.
Does WF Sentinel affect performance?
Minimal impact. WF Sentinel adds less than 5 milliseconds to request time and uses very little memory (~2-3 MB). Most sites notice no difference at all in load time or performance.
Can I use WF Sentinel with other security plugins?
Yes, WF Sentinel works well together with most security plugins (like Wordfence, iThemes Security, etc.). The plugin focuses on attack blocking and threat data sharing, and has minimal overlap with other plugins.
How is the plugin updated?
WF Sentinel's threat database is automatically updated multiple times per day from WF SecurityCloud's global network. When new attacks are discovered, your site is immediately protected. Plugin updates (new versions) are released manually and can be installed via WordPress admin.
Ready to protect your WordPress site?
Download WF Sentinel for free and get immediate protection against attacks
Download free Or try WF SecurityCloud