Inference Attack

• An Inference Attack is a data mining technique performed by analyzing data in order to illegitimately gain knowledge about a subject or database. A subject's sensitive information can be considered as leaked if an adversary can infer its real value with a high confidence

https://en.wikipedia.org/wiki/Inference_attack

• What is an Inference Attack?

An inference attack is a data mining technique used to illegally access information about a subject or database by analyzing data. This is an example of breached information security. Such an attack occurs when a user is able to deduce key or critical information of a database from trivial information without directly accessing it.
https://www.cybrary.it/glossary/i-the-glossary/inference-attack/