It is a gag order on Asssange: He is prohibited from "carrying out activities that could be considered political and interference in the internal affairs of other states, or that may cause harm to the good relations of Ecuador with any other state".

https://www.theregister.co.uk/2018/10/16/ecuadorian_embassy_... http://www.codigovidrio.com/code/wp-content/uploads/2018/10/...

Going through his lawyers and explicitly saying that this is a confidential legal document is a way to get press for his case while not technically violating the conditions.