Because Wikileaks has many defenders, far faster than sluggish governments:
An anonymous, loosely affiliated group that has been responsible for a series of recent distributed denial of service (DDoS) attacks against entertainment industry websites over copyright issues, has started attacking organisations viewed as being hostile to WikiLeaks, says a PandaLabs researcher.
The group, dubbed Anonymous, launched a DDOS attack on Monday that knocked Swiss payment transaction firm PostFinance’s website offline.
The attack was in apparent retaliation for the firm’s freezing of an account set up by WikiLeaks founder Julian Assanage, PandaLabs threat researcher Sean-Paul Correll said.
The bank’s main website was unavailable for several hours but appeared to have been restored by late Monday afternoon.