Nicole Wong, Google’s deputy general counsel in charge of compliance, is the point person for growing criticism of Google’s privacy practices. More than two dozen European privacy regulators have launched an inquiry into Google’s data protection practices. In the United States, the Federal Trade Commission is probing Google’s pending $3.1 billion acquisition of DoubleClick, an online advertising company. Last week, Privacy International, a London group, ranked Google’s practices the worst among 23 top Internet services, including Microsoft, Yahoo and AOL. Wong spoke with the Mercury News about her job and Google’s approach to privacy.