You're right. The corporate conspiracy theory makes much more sense.
Why would the avionics fit for Marine One be of use to anyone?
It's not like the President uses it to travel around the US or foreign lands.
Nope, knowing the ECM capabilities would be of no value whatsoever to someone looking to make a 'splash' in the headlines. (Pun intended).
The fact that such material is so easily accessed and transmitted is not worrisome. Nor the fact that cyber crime - ID theft, intellectual property theft, R & D (civilian and goverment) theft is a $1 trillion a year industry. The fact that it is so easy to enter into personal, corporate, and government computers and networks either through design or stupidity is not a problem.
Nope, 'sticking' it to the corporate man is much more plausible.