Julian uses BitLocker to encrypt his laptop hard drive. Is that adequate? Leo says absolutely. It's more than sufficient. And with more than 12,000 laptops being lost and stolen every week at airports, it's a wise idea to encrypt his laptop hard drive when he's traveling. But remember -- BitLocker requires certificates, so he can't lose them. It's wise to back them up or he won't be able to decrypt his drive. He should make sure that he uses a very good, random password for the encryption as well.