1. Distrust your employees first.
Yes, companies leak information all the time, most of it through the very act of doing business. Paranoia is not the answer to learning about a rival. Our cardinal intelligence rule, “Wherever money is exchanged, so is information,” tells you that every time a business transaction takes place—whether leasing new office space, purchasing equipment, or bringing in temporary workers-- intelligence of interest to competitors is invariably created. That’s just how business works. Sure, you can have a malicious employee – or a board member – but more likely the company serves this information to the market on a regular basis anyway.