Hello.
You don't have to trust me. Find it for yourself. Choose any security headers scanner checker. For instance, try
https://securityheaders.com/
Type there your weebly hosted web site and be shocked.
When asked weebly for help how to add/modify security web headers the answer was:
I'm sorry, but we are unable to assist with security headers. No one at Weebly will be able to assist you in modifying security headers. I apologize, I wish we could, however this simply isn't something we're able to provide support on.
