Yes, WP-Sentinel is free to use. It is available as a free plugin on WordPress.org.

How many websites use WP-Sentinel?

WP-Sentinel has 60 active installations as tracked by WordPress.org.

What are the best WP-Sentinel alternatives?

Popular alternatives to WP-Sentinel include Simply Show IDs, Multisite Blog Id's, Gmt Post IDs. You can compare them side-by-side on our comparison pages.

Does WP-Sentinel work with the latest WordPress?

WP-Sentinel has been tested up to WordPress 3.3.2. It requires WordPress 2.8+ and PHP false+.

PluginSift

WP-Sentinel

Name: WP-Sentinel
Rating: 2.6 (5 reviews)
Author: evilsocket

A wordpress security system plugin which will check every HTTP request against a given set of rules to filter out malicious requests.

By evilsocket·Ids·Free

2.6(5 reviews)

·60 active installs·Updated 14 years ago

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As of April 2026, WP-Sentinel is a WordPress ids plugin with 60 active installations and a 2.6/5 rating from 5 reviews. It has been downloaded 23K+ times in total. Requires WordPress 2.8+ and PHP false+. Available on WordPress.org since 2010. Last updated 14 years ago — may have compatibility concerns. Top alternative: Simply Show IDs.

2.6/55 reviews

60active installs

23K+total downloads

16 yearssince 2010

Overview

WP-Sentinel, is a plugin for the WordPress platform which will increase the security of your blog against attacks
from crackers, lamers, black hats, h4x0rs, etc .
The plugin will be loaded by wordpress before every other installed plugin and will execute some security checks upon incoming http requests and, when one of more
requests turn on the system alarm, they will be blocked, the sentinel then will show a warning message to the user and send a notification email to the blog
administrator with the whole attack details.
Furthermore wp-sentinel will communicate with a centralized server to collect attackers data and build a ip address blacklist.

This plugin is able to block those kind of attacks :