Malware Warning in Google Tag Manager

Update time: June 13, 2025

Issue

If you deploy third-party code with custom HTML in GTM, then you may encounter:

Reason

This is because GTM has a malware detection mechanism, which was released in 2016. It will automatically scann whether there is malware in the configuration in the container, and prompt if there is.

Malware may include, but is not limited to, viruses, worms, spyware, adware, and Trojan horses

Referral：https://support.google.com/tagmanager/answer/6328489?hl=en&sjid=7357199625457235536-NC

Solution

Google Tag Manager will not fire tags that point to sites where malware is found, remove it as soon as possible.

It is recommended to only use tag templates from the Community Template Gallery, and not those from other unknown sources.