Then he called the name he'd been given, posing as a guy from IT. "Later tonight," he said, "we're swapping out a router and need to make sure the people on your team don't lose connectivity to your server. So we need to know which servers your team uses." The network was being upgraded all the time. And giving the name of the server wouldn't hurt anything anyway, now would it? Since it was password-protected, just having the name couldn't help anybody break in. So the guy gave the attacker the server name. Didn't even bother to call the man back to verify his story, or write down his name and phone number. He just gave the name of the servers, ATM5 and ATM6.