Threat categories group common threats (e.g., viruses, botnets, exploits) together, which can be detected and controlled by Zscaler's signature-based intrusion detection. In addition to the predefined threat categories provided by Zscaler, you can define custom threat categories and add custom IPS signature rules to them.

To add a custom threat category,

1. Go to Policies > Cybersecurity > Inline Security > Custom IPS Signatures.
2. Click the Threat Categories tab.

3. Click Add Threat Category.

   The Add Threat Category window appears.

4. In the Add Threat Category window:
   • Name: Provide a unique name for the threat category. The name can contain any characters, including spaces, within a character limit of 255.
   • Description: (Optional) Provide a description for the threat category. The description cannot exceed 255 characters.
5. Click Save and activate the change.