https://thenextweb.com/artificial-intelligence/2018/06/01/ai-researchers-developed-a-privacy-filter-to-fight-facial-recognition/

A team of researchers from the University of Toronto have developed an algorithm that protects images from facial recognition AI.

What it does: The researchers, Parham Aarabi and Avishek Bose, developed the AI to defend photos from facial recognition, but it’s not a shield — it’s actually an attack agent.