Worms are considered a major security problem today, but one expert says you may be overlooking a bigger problem -- the damage a single hacker can do inside your network.
"We're not perfect. We're not where we need to be," Microsoft CEO Steve Ballmer said at the conference about his company's security efforts. But he said the company is making progress based on feedback from partners and customers.
One partner attending the conference explained that his biggest Windows security concerns stem from backdoor vulnerabilities that don't appear until after a patch has been made.
"I'll often patch one vulnerability, and then a new one shows up," said Guy-Marie Joseph, president of ConnecTalk Inc., a Montreal-based IT services company. "Patches don't take into account the back door. Unless you've been hit by a hacker, you don't know what's vulnerable. If you haven't been hit, you eventually will and then you'll know."
Johansson's session addressed common administrator mistakes that open the door to hackers, including failure to harden Windows applications, allowing outbound FTP, weak passwords and login misuse -- logging onto something other than a domain server with a domain server login.
"What really worries me is somebody adding himself to my payroll. Do you know everyone on your payroll?" he asked, adding that many IT shops are unaware of a hacker's presence.
Johansson also described a scenario in which he injected a Trojan horse in a domain server during a vulnerability test at Microsoft. No one logged onto the domain servers, which he called a sign of a well-run network. However, no one noticed the file named "EvilTrojan.exe," so he finally had to inform IT managers of the Trojan's presence, something that obviously wouldn't happen in the real world.
"The moral of the story is initial entry is everything," Johansson said. "Most networks are designed like eggs shells. They're hard and crunchy on the outside, soft and chewy on the inside."
Once a hacker is in your network, you have three options, according to Johansson. You can update your resume, hope the hacker does a good job running the network or drain the network. The latter is really your only option, he said.