Google agreed to purge billions of records containing personal information from 136 million people as part of a settlement over Chrome's Incognito mode. The lawsuit accused Google of illegally tracking users' internet activity even when Incognito was enabled. Google will delete old personal technical data never associated with individuals or used for personalization. The settlement requires Google to make privacy disclosures for Incognito more prominent. Lawyers valued the settlement at $4.75 to $7.8 billion based on potential ad revenue from the data.