In the past few months, more than one market research organization has reported that mobile devices will become the “hardest hit area” in the security field in 2014, especially those mobile devices used by employees of government agencies and enterprises. It may become the target of hackers, and the security vulnerabilities in most well-known mobile applications will also give illegal elements more opportunities. Last year, the U.S. government warned that Android devices have become a major threat to the security of individuals and businesses. Not long ago, 4.6 million usernames and related information of the well-known “burn after reading” app Snapchat were stolen by hackers. At the same time, researchers discovered There is a serious loophole in the user authentication mechanism of the application. Hackers can use this loophole to launch a denial of service attack and cause the user's iPhone to crash directly. The above-mentioned situations are enough to cause enough attenti...