Special Report on Data Collection, Analysis and Reporting on Attacks and Violence against Journalists (OSCE)

Monitoring and information gathering should be based on the reporting by media workers under threat or attack themselves, but alerts and verification should also be received from other trusted sources such as trade unions, professional associations and press freedom organizations. Next, any monitoring institution should establish close co-operation with law enforcement and judicial authorities.

https://www.osce.org/representative-on-freedom-of-media/530605