By Dustin Volz WASHINGTON (Reuters) – Yahoo's disclosure that hackers stole user data from at least 500 million accounts in 2014 has highlighted shortcomings in U.S. rules on when cyber attacks must be revealed and their enforcement. Democratic Senator Mark Warner this week asked the U.S. Securities and Exchange Commission to investigate whether Yahoo and its senior executives properly disclosed the attack, which Yahoo blamed on Sept. 22 on a “state-sponsored actor.” The Yahoo hack could become a test case of the SEC's guidelines, said Jacob Olcott, former Senate Commerce Committee counsel who helped develop them, due to the size of the breach, intense public scrutiny and uncertainty over the timing of Yahoo's discovery.
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Yahoo hack may become test case for SEC data breach disclosure rules