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Reddit: IP Address Disclosure Puts User Anonymity At Risk * TorrentFreak
(torrentfreak.com)
This is a most excellent place for technology news and articles.
If they have the root access typically needed to reboot a server^1^ they could also just wipe the logs without rebooting.
^1^: GUIs typically have a way to reboot without such privileges, but those are typically not installed on machines just used as servers.