The complete title of this project from 2020 is "Deanonymizing quietly all of Tor, the undisclosed attack"

Where one of the two names of undisclosed is Chameleon since the attack can take various forms

It allows to deanonymize Tor users, hidden services and their operators, the attack is quiet, difficult to detect, easy to perform but subtle, so far we did not find any convincing counter measures against it

It was not intentional to end up with those findings which just came from our work on the node-Tor project, in fact mistakes raising some concerns

That's not theoretical/academic work and has been tested, showing also some other vectors of attack, this self financed project goes to the organization that would fund this work, a minimal version of the study does exist and can be provided, contact: PGP Key fingerprint (aymeric peersm com): 65EF AE3D 973F D36A AB25 1225 2A1D 7B34 2627 AC39