The new issued Monday, doesn't change much. Marines have not been allowed to access sites like Facebook, MySpace or Twitter from military networks. The Marines have simply put an official stamp on the ban, while also laying out the steps to take for any Marine who wants to access a site as part of his or her job.
"These Internet sites in general are a proven haven for and content and are particularly high risk due to information exposure, user generated content and targeting by adversaries," the directive noted. "The very nature of [social networking sites] creates a larger attack and exploitation window, exposes unnecessary information to adversaries and provides an easy conduit for information leakage ..."
The ban, however, is only for people using Marines' equipment and networks while they are working. Marines may still Twitter or post to Facebook on their own time and on their own computers.
The military isn't against using sites like Facebook and Twitter, said 1st Lt. Craig Thomas, a Pentagon-based spokesman for the Marine Corps.
The U.S. Central Command , a channel on YouTube and a Twitter account to get out information regarding operations news. The Army is using MySpace to recruit new soldiers and the on Facebook has more than 24,000 fans.
"The Marine Corps has got to find a balance between security and letting Marines capitalize on the technology," Thomas said in an interview with Computerworld. "We don't want information leaks and we want to keep Marines and we wanted to save bandwidth. We're trying to find the fine line."
Thomas noted that 30 years ago, soldiers were warned about revealing too much information in letters home. Then 10 years ago, they were warned about how they used e-mail. Today, the focus is on social networks.
"You can't have someone posting, 'Hey, we're leaving on this date and at this time,'" he added. "Believe me, the enemy is checking out what you guys are reporting and what service men and women are saying online. The Marine Corps instills operational security. They need to be cognizant of what they're saying, whether verbally or what they're saying on social networking sites."
Ken van Wyk, principal consultant at KRvW Associates, said the Marines have several avenues of concern with social network use and they're probably right on track with most of them.
"If they're concerned about the platform -- whether Facebook itself is secure -- then their concerns should go far beyond just Facebook," van Wyk said. "Any site that permits active content into the user's browser runs the same risk. Facebook is just one of many."
But for the military to be concerned about soldiers posting mission critical information on Facebook or MySpace, then they're not thinking broadly enough, van Wyk said.
"If they're concerned about the content, like soldiers posting, 'Wow, having breakfast just outside of Fallujah today,' then Facebook is purely just a scapegoat," he added. "Information can be shared in many different ways. SMS texts, for example. E-mails to friends. Facebook and its ilk make that particularly easy, as well as tough for the Marines to control or even monitor, but someone who wants to share information is going to find a way."