You know I keep hearing this myth. As if a real employee/agent could never leak information. TS/SCI clearance is the same for everyone. Cleared is cleared.
To speak to the Snowden leaks, in there entirety they now are clearly, far outside the scope of any single user, unless that user was a multi-department head or higher. It is more likely that the leaks are from multiple users now. The story posted yesterday about the access level of the information lends this theory some credibility, although none to the means of access.
http://investigations.nbcnews.com/_news/2013/08/29/20234171-...