1. Respectability-and-trust — the offender's position enables the wrong (the fiduciary's abuse).
2. Concealment — the crime hidden in the legitimate transaction (no obvious victim, no immediate harm).
3. The victim's diffuseness — the public, the consumers, the investors, the treasury (the harm's spread thin and wide).
4. The magnitude's scale — the amounts dwarf the street crime (the financial scandals' billions).
5. The complexity — the paper-and-digital trails (the specialist's investigation — the forensic faces).
6. The organisation — the collective machinery (the corporation, the network).
7. The law's struggle — the detection-and-prosecution difficulties (the evidence's technicality; the "too big to jail" debates).