  |  | Wall Street closes higher, S&P at another record | NEW YORK (Reuters) - The S&P 500 closed at another record high on Wednesday as private-sector labor market data suggested that the economy was slowly building momentum after a winter-related pullback earlier in the year. | |  |   |  | U.S. senator accuses GM of 'culture of cover-up' in recalls | WASHINGTON (Reuters) - General Motors Co CEO Mary Barra came under withering attack for her company's decade-long failure to deal with defective parts linked to fatal crashes, in a hearing where U.S. Senators accused the company of "criminal" behavior and "a culture of cover-up." | |  | |  |  | Amazon unveils $99 Fire TV set-top box to rival Apple | NEW YORK/SAN FRANCISCO (Reuters) - Amazon.com Inc unveiled a $99 video streaming device dubbed Fire TV on Wednesday, the U.S. e-commerce leader's latest step to beef up its multimedia presence and capitalize on the growing appetite for digital media. | |  | |   |  | Microsoft to offer Windows for free on phones, tablets | SAN FRANCISCO (Reuters) - Microsoft Corp is to give away its Windows operating system to makers of smartphones and small tablets as it seeks to make more of an impact on those fast-growing markets and counter the massive success of Google Inc's free Android platform. | |  | |   |  | U.S. regulators warn banks about rise in cyber-attacks | WASHINGTON (Reuters) - A group of top U.S. regulators on Wednesday warned about the threat of rising cyber-attacks on bank websites and cash machines, urging the industry to put proper measures in place to guard against fraud. | |  | |   |  | U.S. gives foreign banks more time on anti-tax dodge law | (Reuters) - The U.S. Treasury Department on Wednesday gave foreign financial institutions 10 extra days to register with the U.S. government, under a new law to combat offshore tax dodging by Americans that goes into effect on July 1. | |  | |   |  | Private-sector hiring breaks out of winter freeze | WASHINGTON (Reuters) - U.S. companies stepped up hiring in March for a second straight month, offering fresh evidence the economy was regaining momentum after a weather-driven lull over the winter. | |  | |  |  |  | A daily digest of breaking business news, coverage of the US economy, major corporate news and the financial markets. 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