The hacker known as TheHackerGiraffe has been promoting PewDiePie’s YouTube channel through unwanted Internet-connected printer jobs and Chromecast hacks. In an audio Periscope recording, the hacker calls it quits after being told that the FBI may be building a case against him. The hacker says he will be keeping his Twitter account live and will monitor DMs, but will no longer Tweet, hack, or do anything else for a while. Whether or not the FBI is targeting him is currently unknown.
Source: https://www.bleepingcomputer.com/news/security/chromecast-hacker-calls-it-quits-after-hearing-fbi-is-looking-into-him/