I used to believe Blackberry had the most secure email system up until mine was hacked. The hack occurred when ‘Anonymous’ gained access to all of Stratfor’s members and emails. I received an email on my Blackberry from ‘Anonymous’ asking if I’d like to be one of the individuals who was sent stolen email files from Stratfor to peruse. I told them to go to hell and shortly there after that device never quite worked well again. Perhaps just a coincidence. After that, I lost faith that BB’s email was any more secure than the competition.
If traitors such as Manning, Snowden, and miscellaneous ‘Anonymous’ can gain access to ‘secure’ data systems, maybe the expertise of their like should be sought out to retrieve the IRS email. While their at it, why not release the drone coverage of the Benghazi battle as well.
Blackberry mail is more secure in transmission, between the server and the device. The servers themselves are no more secure than any other servers. If the hackers attack at that point, you’re vulnerability depends on how good your server admin was at anticipating vulnerabilities and blocking them off.