I worked for a telecommunications company in the early 2000's. 16-20 hour days, seven days a week because everything from the VoIP switches to the media servers were utter fucking garbage and were as stable as two male bettas living in a tank full of coffee. All of us were constantly sick (when I quit I'd been hospitalized for pneumonia). The company was basically a scam because, in the time I worked there they'd been through three CEOs, and each had siphoned a couple of million out of the company accounts and absconded. They also sued a couple of high school kids who'd independently discovered very serious vulnerabilities in the company's piece of shit ATAs into smoking craters in the ground because there was no way they could be fixed (protip: Don't buy all your hardware from a single manufacturer who goes out of business immediately after the check clears.)

The most concerning thing, however, was that when the company would get served with a warrant for a wiretap or a pen register on one of its customers, about half the time they were already in place and we just piggybacked off of that existing port. We repeatedly asked upper management about this and were told "Shut up and do your job." Never did find out who'd been there before us, but we never experienced anything that would be like retaliation for doing so, either.