> Which is what exactly? That a spy agency is spying? To spell it out: backdoors are of course a helpful tool for a security agency, but once the key for the b

> Which is what exactly? That a spy agency is spying? To spell it out: backdoors are of course a helpful tool for a security agency, but once the key for the backdoors falls into the wrong hands the potential for misuse is monstrous because, well, the backdoors are in all kinds of potentially critical systems systems, e.g. even in the cellphones of high ranking officials (or in cellphones of their families) etc. To get the same intel by different means than a backdoor is of course much more expensive. So one needs to find the sweet spot, where the utility as a function of cost and security is maximized. That sweet spot likely does not involve backdoors.