# Terminology

Black List is a list of IPs automatically blocked by Imunify360 without access to Anti-bot Challenge and manually blocked by a user.

Gray List is a list of IPs that will be redirected to Anti-bot Challenge to pass verification. Once the IP passes Anti-bot Challenge, it will be unblocked and removed from Gray List.

White List is a list of IPs that will not be blocked in any case.

Sensor – 3rd party applications and services that serve as agents to detect the suspicious activity of different types. Imunify360 central server also serves as one of the sensors.

IDS – the Intrusion Detection System (IDS) is a software application that monitors a network or systems for malicious activity or policy violations.

Incident – a detected event on the server that is qualified as suspicious activity.

Ignore list – the list of files and folders that Malware Scanner will ignore during automatic and manual scan processes.

IP – IPv4 or IPv6 address (corresponding to 64 bits subnet prefix length).

Whitelisted domain – no Anti-bot Challenge will be shown while visiting a whitelisted domain from a graylisted IP.