Location-based services sometimes offer to protect user privacy and obfuscate PII in the location data. But new research showed “a set of location traces can be deanonymized given an easily obtained social network graph” Researchers used Wi-Fi hotspots on a university campus, captured chats via instant messengers, as well as Bluetooth connectivity to show inter-user correlations. Jeremiah Grossman, founder of WhiteHat Security, has a different deanonymizing approach in his “I Know” series. Clickjacking techniques involve an invisible object that chases your mouse around the page.”]