b08bc21f_anadian_Criminal_Investigators__Basics
[Order] Preservation demand 487.012 [Reasonable grounds to...] Suspect [Basics] 
A peace officer may require a person or organization to preserve computer data. In most cases, the obligation lasts only 21 days, after which you must get a production order, or the data will be destroyed. You can't extend your order. If you want your target to keep your investigation secret, you need
Legal Topics for Canadian Criminal Investigators
Basics