For a period of time last month, the most popular new paid Android app on the Google Play store was antivirus software. According to multiple reports, it was also a scam. Both facts tell us something about the digital world we're living in today. First, the threat of cyber crime is prevelent enough that antivirus software can top the charts of a popular online marketplace (although whether all the downloads for this particular app were legitimate is hard to know). Second, when it comes to cyber crime, no one — not even Google, one of the most powerful companies in the ...