Hackers Use Backdoor to Break System

Industrial control system comes with a backdoor:

Although the system was password protected in general, the backdoor through the IP address apparently required no password and allowed direct access to the control system. "[Th]e published backdoor URL provided the same level of access to the company's control system as the password-protected administrator login," said the memo.

The security of this backdoor is secrecy. Of course, that never lasts:

Hackers broke into the industrial control system of a New Jersey air conditioning company earlier this year, using a backdoor vulnerability in the system, according to an FBI memo made public this week.