What is data poisoning? Attacks thatcorrupt machine learning models
It's not news that attackers try to influence and skew these recommendation systems by using fake accounts to upvote, downvote, share or promote certain products or content. Users can buy services to perform such manipulation on the underground market as well as "troll farms" used in disinformation campaigns to spread fake news. "In theory, if an adversary has knowledge about how a specific user has interacted with a system, an attack can be crafted to target that user with a recommendation such as a YouTube video, malicious app, or imposter account to follow," Andrew Patel, a researcher with...