Xbox Live is being targeted by malicious hackers selling services that kick players off the network. The booting services are proving popular with players who want a way to get revenge on those who beat them in an Xbox Live game. The attackers are employing data flooding tools that have been used against websites for many years. Microsoft is "investigating" the use of the tools and said those caught using them would be banned from Xbox Live.  "There's been a definite increase in the amount of people talking about and distributing these things over the last three to four weeks," said Chris Boyd, director of malware research at Facetime Communications.