Do any of the participants have any mobile phones on them? Are there any windows in the basement? What do you mean by "secret files"? Do you mean encrypted? How do you know it's not a compromised service/protocol?
I think you underestimate what present-day technology is capable of.
Sorry if I wasn't clear enough. What I'm illustrating is that parallel construction doesn't allow the government to use it's full force to make an investigation. They can't "accidentally" search your computer or "accidentally" track you phone or "accidentally" monitor you traffic. That's fundamentally different from a police van "happening" to be at the bank that's about to be robbed or something b/c that could have happened anyway. Do you see the distinction?
> have secret files on your computer
Do any of the participants have any mobile phones on them? Are there any windows in the basement? What do you mean by "secret files"? Do you mean encrypted? How do you know it's not a compromised service/protocol?
I think you underestimate what present-day technology is capable of.