It may have been easy for Congress on Friday to approve the Cybersecurity Information Sharing Act (CISA), despite past controversy around it.

This bill does not hike federal spending or impose sweeping regulatory rules. Its main feature is something many firms will be happy to get: liability protection if they share information with the government about cyberthreats and attacks.

CISA was slipped into the keep-the-government running $1.1 trillion spending bill. It was approved just before lawmakers took their holiday recess. The cybersecurity provisions of the bill itself are expected to cost the government about $20 million over a four-year period.

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