I am not sure if this is the correct platform for this question. The source code of Zeus trojan is available on the internet. It can be found on github as well. I have read somewhere that the purpose is to make research easier to understand how something like this works.
My questions are:
- How was the source code found? The original author can't have given it out.
- Is it possible that a person can make a new trojan or virus from such source code which will not get detected by an antivirus? If so, why was release of this source code allowed?