According to an investigator in the "NSU 2.0" process, the Hessian police have been "considerably sensitized" to dealing with requests for personal data since leaks became known.
An investigator from the State Criminal Police Office (LKA) said on Thursday as a witness before the Frankfurt Regional Court that the police leadership had worked to ensure that information to unknown callers or e-mail addresses would only be given if a police password was disclosed.
Such a regulation already existed before the threatening emails became known, the witness said.
However, it was not applied consistently - especially when the phone number on the display was known, exceptions were made.
In February 2020, an unsuccessful attempt was made to determine where the author of the threatening emails got the data from cabaret artist Idil Baydar and left-wing politician Janine Wissler.
The review of almost 40,000 queries in two police stations in Wiesbaden revealed "no abnormalities".
The 54-year-old Alexander M. from Berlin has to answer to the Frankfurt Regional Court as the alleged author of the emails.
The public prosecutor charged him with insults in 67 cases, attempted coercion and threats.
The accused denies any guilt.
The emails were signed "NSU 2.0" in reference to the right-wing extremist terrorist cell "National Socialist Underground" (NSU).