The cyberwar began after MasterCard, PayPal, Visa and a Swiss bank blocked payments to WikiLeaks, which runs on donations. These companies, along with Amazon, which banned WikiLeaks from using its servers, are thought to have given in on a US pressure.I disagree with this. The Cyberwar began in the early days of the releases when there were reports that the Wikileaks site was under attack. The US government was the prime suspect at that time. Then Amazon, Paypal, the DNS provider, Mastercard and Visa hit Wikileaks. I would call these attacks, as they were an attempt to stop or shutdown Wikileaks. These were the first shots. That is when the Cyberwar began.
The Hackers are just responding.