The same kind of thing happened in my company. A tech left an unencryped flash drive with proprietary information, including a computer image behind and it was found by the client. It raised quite a stink and, as a result, the company has issued all the field service techs Aegis encrypted 100Gb flash drives. After keying in the numerical password of choice, you have 30 seconds to seat the drive in a computer or it locks back up. 3 failed attempts locks the drive for 20 minutes I believe. I now have an encrypted USB hard drive for all my backed up information as it exceeds the capacity of the flash drive after having that hard drive unencrypted for years as it never leaves my home office.