An0m: lawyers challenge encrypted messaging app used by AFP in global crime sting

A year after app's unveiling questions have been raised about legal grounds on which messages intercepted and warrants used

• Get our free news app, morning email briefing or daily news podcast

The legality of the encrypted app An0m, which the Australian Federal Police (AFP) used to run a global crime sting, is being challenged in the courts a year after its highly publicised unveiling.

In the 12 months since the AFP and FBI let the world know they were behind an encrypted phone known as An0m, it has led to 340 alleged offenders being charged in Australia with 1,011 offences. The number of arrests globally is over 1,000.