Reportedly the leaked personal data (name and phone number) of 250+ million #whatsup users has been scraped through search engines such as google with `site:wa.me "+country-code"`
https://youtube.com/watch?v=pHu0_ksUAbQ
If you are an affected user then be careful about who's calling you as this information can be used for "spear phishing"[https://en.wikipedia.org/wiki/Phishing#Spear_phishing] meaning someone calling your phone number and addressing you by your name to scam/blackmail you.