"We’re unlikely to get answers from the government agencies who signed these contracts. To access Vigilant’s powerful online data systems, agencies agree not to

"We’re unlikely to get answers from the government agencies who signed these contracts. To access Vigilant’s powerful online data systems, agencies agree not to disparage the company or even to talk to the press without the company’s permission" How is it possibly legal for a government, which is supposed to be transparent, to contract with a private company and accept a term saying they cannot talk about the private company without company approval?