The Source Code for Vine was Accidentally Made Public
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A security researcher who goes by the username "avicoder" published a blog post about his discovery. He says that he found a subdomain on Vine's website which led to him discovering Vine's entire source code available for download.
The source code for apps and programs is usually a closely guarded secret as it shows the inner working of exactly how an app functions, and public exposure is a big security risk.
Avicoder reported his finding to Twitter, and it was removed within five minutes. He was later paid a $10,080 bug bounty for finding the code. Twitter declined to comment on this story.
In case you were wondering, here's what it looks like to receive a $10,000 payment from Twitter: