Happy to clarify some security and privacy points.
Sorry for misunderstanding your question, i'm not a native English speaker, i will try to respond as clear and easy as i can:

Real but not liked answer :

1. I want to say that you can trust me but whoever i am and have done, this won't make me sure. In fact you can't trust anyone at 100%.
2. Steem and Github account are linked, you can verify it GitHub, there is a link made (from GitHub) to the esteem8 Steem account.
3. Code given is code shown on GitHub, you can verify it on GitHub too. (GitHub is the server)
4. The only way to trust code at 100% is to read it, anyone can read it on GitHub and give his/her thoughts here.
5. To be sure that code author are really these who are on GitHub, there no absolute proof that i can give, however i can tell you that the main contributor who's write 98% of GitHub content is the @primerz (on Steem and GitHub) and is in reality Matias Affolter. You can personally contact me on Facebook or by email, i will confirm it. You can also check the domain name administrator (esteem8.com) on a whois service.

I know that these type of answers are not liked because it prove that noting is sure, (i think that you want that i respond "You can trust me at 100% because of...") but it is not the reality of things and i wanted to respond as right and close to reality possible.
Within the case that code where stolen from someone, the only way for he/her to say that his code was stolen is to say it here.

Not real but liked answer:
You can trust the code and me because of ... Don't worries everything is fine (said in a sense that we think it's right).

P.S. Security is to know that NOTHING is 100% secure even Steemconnect, everything come from a purely personal trust on someone or group of people who are purely based on information that can be made in a sense to corrupt thoughts.