Amazon, Apple, Google and Mozilla have all filed an amicus brief to support Microsoft in its battle against the US government over the Electronic Communications Privacy Act (ECPA). The document, also known as a friend-of-the-court brief is designed to act as a legal show of support in Microsoft’s ongoing battle against government officials over wording in the ECPA that lets officials determine when (or if) companies should notify customers of government information requests. These tech companies hope to send a message to the courts that the ECPA is detrimental to privacy and could be a violation of the Fourth Amendment — protection…

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