Avast, a cybersecurity software company, purchased 20 used Android phones from eBay in 2014. Even though previous owners had performed a factory reset to erase all their private data from memory, the company was able to recover 40,000 photos (including nudes and kids’ pictures), 1,000 Google searches, 750 SMS and email exchanges, and tons of contact details.

Yet another global malware infection has been making headlines and the story just took a turn for the worse. When the news of VPNFilter broke, experts warned that 500,000 devices were already infected, but now they believe that number is much higher.