Here's the HN discussion about that case [0]. The VPN service was keeping logs of when you signed on and off, not of where you were visiting. The FBI used those

Here's the HN discussion about that case [0]. The VPN service was keeping logs of when you signed on and off, not of where you were visiting. The FBI used those timestamps to validate what they already knew from the guy. There was never any working backwards to find an original IP from some VPN-assisted visit. [0] https://news.ycombinator.com/item?id=15432827 https://news.ycombinator.com/item?id=15432827