WikiLeaks, beset by technical problems regarding its website and under fire from governments worldwide, has now lost a major revenue source.
Payment service provider PayPal cut WikiLeaks' online donation account Friday.
WikiLeaks violated its acceptable use policy, "which states that our payment service cannot be used for any activities that encourage, promote, facilitate or instruct others to engage in illegal activity," PayPal said in a statement.
WikiLeaks posted on its Twitter page that the action was based on U.S. pressure and sends readers to a donation page, where supporters can pay by credit card, bank transfer or through the mail.
The Twitter page also solicits for a defense fund for founder Julian Assange.