Kernrechtsfrage
Whether the retrospective antenna search surveillance request against unknown fraud offenders was proportionate and lawful.
Extrahierter Entscheid
The surveillance request was not disproportionate in principle, but the coercive-measures judge's refusal did not violate federal law and remained upheld.
Extrahierte Begründung
The measure is an exceptional, subsidiary last resort for unknown offenders; compared with the cited precedent, the case involved no armed violence and no objectively very large criminal proceeds, so the refusal was justified.