A Charlotte law firm received a ransom demand. But the ransom wasn’t for the release of a kidnapping victim. The law firm would have to pay for the release of its file server. You see, hackers scrambled the server and encrypted the data. The hackers then demanded the law firm pay for the encryption key. A different Charlotte law firm transferred $38,000 to a Virginia Beach bank. Cybercriminals intercepted the transfer and eventually routed the funds to a bank in Moscow. In both cases, you might think, the hackers worked their way through the Internet and kept testing the firms’ security,...