Thinking ahead

I know im asking this pretty early since im a beginner in c++ but i started thinking ahead in time about making actually useful programs and i thought to myself "How am i going to protect my programs from hackers" and then i couldn't stop thinking about that all day. So of course my first response was to google it and guess what popped up? Ways to hack c++ programs and that only brought up my worry's even more so, do you guys have any tips or ideas for protecting your programs from hackers?
In which aspect do you want to protect your programs? unauthorized copying / unauthorized changes / unauthorized execution / unauthorized analysis(hiding patents or algorithms)?
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