What precautions should a man take to prevent his sperm from getting stolen without his consent?

Reputable sperm bank: If you are a sperm donor, be sure you are dealing with a reputable sperm bank. Once the semen specimen is donated the sperm bank should have precautions in place to guard against theft, loss of freezing materials, back up power, and loyal well trained personnel. Actually, I don't remember a case where semen was stolen. Maybe other HT docs know. To use it, characteristics of donor necessary.0