Folded into the massive spending and tax cut bill was a significant and controversial new law on cybersecurity. The act encourages private companies to share data about hacks with the government, but it's raising questions among security advocates and privacy…

WASHINGTON — Republicans whipped more than $600 billion in compromise tax breaks for businesses, investors and families through the House on Thursday, as Congress tried capping 2015 with a flurry of accomplishments before the partisan collisions certain to dominate the…