U.S. cyber-security firm CrowdStrike Inc said Monday it had successfully prevented a Chinese hacker group from targeting a U.S. technology firm for the first time, offering promise for other companies facing cyber-attacks. Dmitri Alperovitch, co-founder and chief technology officer of CrowdStrike, told Reuters his company had observed a China-based hacker group called Hurricane Panda halt its attacks on a U.S. …