This week has seen a number of incidents related to hacking and the unauthorized access of information. In some cases, personal information has been compromised, in others, system administrators were able to take their networks down before anything was badly damaged. Following the recent PSN hack, which brought down Sony's systems for over a month and put many users' payment information and personal details at risk, the public eye is very much on hacker activity -- so here's a summary of what's been going on this week.