kompromat
Compromising material, blackmail material, (real or fabricated) evidence that a person does not want revealed, dirt.
countable, uncountable
Many observers have commented that, with so many Russian newspapers and TV channels now controlled by oligarchs or powerful organisations, kompromat is now a regular feature in the supposedly independent press.
Where it comes from
Borrowed from Russian компрома́т (kompromát), short for компромети́рующий материа́л (komprometírujuščij materiál, “compromising material”). Soviet security service slang from the Stalin era.
Adapted from the Wiktionary entry kompromat (CC BY-SA 4.0).