I am a undergrad student working on a project in creating a financial escrow website. I would basically be accepting funds, holding them and transferring them to people.
Being an undergrad, I have worked with a lot of languages but have never done a consumer facing end product project.
I am planning to use PHP or React with MySql for UserDB (login) and e-Wallets (to store funds).
What are some measures that I should be taking to prevent a hack (I hope I don’t sound like an idiot, I’m new to this and have no idea about Cyber Security). Any article, web based tool or advice is appreciated.