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I know that this IP address or device is bad. How do I tell Sift?

The first way to tell Sift an IP address or device is bad is by sending a Bad Label / Manual Block Decision the users who are using that IP address or device. Sift will learn this IP address or device is associated with bad users, and other users who share that IP or device will have their score penalized. The more Bad users who are associated with a device/IP, the higher the Sift Score will be for other users on that device/IP.

You can also increase friction or block users on certain IPs and devices by using Formulas. Read more about setting Formulas up in our integration guide.

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