I can't believe this. This two huge credit cards companies were hacked by wikileaks supporters. Hacking Visa and Mastercard seems to be that easy for intruders like wikileaks suporters..
For further details of the hack of Mastercard and Visa visit this link..
http://ph.news.yahoo.com/afp/20101209/ttc-us-diplomacy-wikileaks-internet-anon-0de2eff.html