New technique uses operating system and hardware level features to track users across multiple browsers. It uses features like extensions, plugins, time zone and whether or not an ad blocker is installed. The new fingerprinting technique ties digital fingerprint left behind by a Firefox browser to the fingerprint from a Chrome or Windows Edge running on the same device. This makes the method particularly useful to advertisers, enabling them to continue serving targeted advertisements to online users, even if they avoid them by switching browsers. The researchers plan to present their paper at the Network and Distributed System Security Symposium in San Diego, California.
Source: https://thehackernews.com/2017/02/cross-browser-tracking.html