SAN FRANCISCO — For the second time this month, Hagens Berman Sobol Shapiro has set its sights on Google Inc.

The Seattle-based plaintiffs firm filed a suit Tuesday in the Northern District of California accusing Google of swindling websites that host ads via its AdSense program out of money they earned for advertising clicks. Free Range Content v. Google, 14-2329, cites charges from an anonymous online poster claiming to be an ex-Google employee with firsthand knowledge of a Google conspiracy to bilk AdSense partners.