AT&T paid $400,000 to a hacker to erase vast troves of call and text logs stolen from its customers. This ransom, discovered through blockchain analysis, sparked concerns over national security and privacy breaches, especially given the magnitude of the data involved. The hacker even provided a video claiming to show the data deletion as proof of their compliance with AT&T's demands. Despite AT&T's refusal to confirm the payment, experts speculate on the implications of such a low r...