
You should also ensure that all images on your site have been compressed, as uncompressed images take up a lot of space and will slow your site's loading time. With over 10,000 deployments world-wide, ModSecurity is the most widely deployed WAF in existence. If your site is still loading slow, consider taking a look at how many external DNS look-ups your site is making (you can test this at ). It has a robust event-based programming language which provides protection from a range of attacks against web applications and allows for HTTP traffic monitoring, logging and real-time analysis. This will resolve the error message, and most your site will start to load normally again. You should also consider moving the visibility and display style information to an external stylesheet: Pattern match "])(window,document,'script','dataLayer','GTM-XXXXXX') ModSecurity: Access denied with code 403 (phase 4). If you're using Wordpress with the Wordfence plugin, you'll notice that Wordfence says the site is all clear, but when checking your error logs, you'll likely find something similar to the following:



If you're using Google Tag Manager, you may notice that your site is becoming extremely slow or giving an error message.
