If you already fearing that the Large Hadron Collider will bring the end to the world, it may be a bit more perilous than we thought. A team of hackers have successfully hacked one of CERN’s systems that is "one step away" from the main computer systems that controls the massive detectors.
According to the Telegraph, the group, calling themselves the "Greek Security Team", left half a dozen files on the system and damaged one file. It also displayed a message on cmsmon.cern.ch, which remains remains inaccessible.
The message was in Greek, and you can view the full screenshot of the message here.