Snapchat, based in Los Angeles, California, has had its most confidential piece of software leaked online. After filing a complaint the code was then taken down from the site.

Snapchat doesn't just make messages disappear. It does the same to GitHub repos -- especially when they contain the company's proprietary source code.

Snapchat likely made a mistake when updating its iOS app in May, because some of the company's source code was obtained and leaked to GitHub, a hosting website for coders.

A UK trio of 19-22 year olds are reversing the code of Snapchat and are building an advertising and AR business that is revolutionizing the ad business.