In order to protect their interests, affiliate networks need to take certain measures. One of those is setting up a blacklist, which contains IDs of affiliate partners who have been banned. The reasons why the users were excluded from a campaign are usually released to fraudulent activities. Still, sometimes the networks add to the blacklist the users who have failed to meet their advertising expectations. A blacklist contains affiliates ID, but also a number of other details that can help them identify the rogue user. Affiliate networks tend to keep their blacklists to themselves, without sharing them with other companies.