On September 27, 2013, California Governor Jerry Brown signed Assembly Bill 370 into law. The bill requires any Web site collecting personally identifiable information (“PII”) from California residents to disclose how it responds to Web browser “do not track” signals and other similar mechanisms that provide choice about PII collection relating to an individual’s online activities. Web site operators must also disclose whether other parties may collect PII relating to an individual’s online activities when he or she uses the operator’s Web site or service. The new law takes effect January 1, 2014.