State privacy rules add pressure on lawmakers to craft national standards Share Copy California has expanded its consumer privacy law to include a prohibition on the use of deceptive messaging and presentation, or "dark patterns," in the limited context of opting out of the sale of personal information. "These protections ensure that consumers will not be confused or misled when seeking to exercise their data privacy rights," said California Attorney General Xavier Becerra in a statement on Monday. The rule amendments [PDF], just approved by the American state’s Office of Administrative Law, were proposed last October after a set of initial rules for enforcing the California Consumer Privacy Act (CCPA) were adopted last August, a month after CCPA enforcement began.