https://techcrunch.com/2018/10/15/facebook-breach-searches-locations/

Hacked Facebook users still don’t know which 15 recent searches and 10 latest checkins were exposed in company’s massive breach it detailed last week. The company merely noted that those were amongst the data sets stolen by the attackers. That creates uncertainty about how sensitive or embarrassing the scraped data is, and whether it could possibly by used to blackmail and stalk them.

Much of the scraped data from the 14 million most-impacted users out of 30 million total people hit by the breach was biographical and therefore relatively static, such as their birth date, religion, or hometown. While still problematic because it could be used for unconsented ad targeting, scams, hacking attempts, or social engineering attacks, at least users likely know what was illicitly grabbed.