I am making my very first site, and I need a way, to secure it.
Users must be able to post stuff on my site, but I want to prevent throttling my site or using bots to break it. I thought of making sign up/in system, but it's vulnerable to all kinds of attacks without SSL certificate, and it would cause users big trouble.
I just can't afford SSL certificate, I generally have $0 to spend to get one.
What should I do in this case?