Tech companies are lining up against cybersecurity legislation that's headed toward a vote in the Senate after months of waiting.

On Tuesday, Apple and Twitter announced their opposition to the Cybersecurity Information Sharing Act, which would allow companies and government agencies to exchange information about consumers free of legal liability, in order to share information on hacking attempts. Apple explained its opposition in a statement that said, "The trust of our customers means everything to us and we don't believe security should come at the expense of their privacy."

The chorus of tech voices opposed to CISA has been gaining steam. The Computer and Communications Industry Association, which includes companies like Google, Microsoft, Amazon, and T-Mobile, said it was opposed to the bill last week.

Speaking on the floor of the Senate on Wednesday, Sen. Ron Wyden, D-Ore., said that the opposition from the tech community was evidence that the bill should be defeated.

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"I believe this bill is badly flawed because it doesn't pass the test of showing that when you share information you've got to have robust privacy standards," Wyden said. "Millions of Americans are going to look up and they're going to say … it's a surveillance bill."

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