I'm curious to know how he was caught. He managed to evade detection for 20 years as a contractor? For the NSA not to have checks and balances internally in pla

I'm curious to know how he was caught. He managed to evade detection for 20 years as a contractor? For the NSA not to have checks and balances internally in place to be able to detect illegal access to assets by 3rd parties a little faster than two decades is incompetent.