Looks like a well designed product, make sure you use https for login and registration, and here is a list of other web app vulnerabilities that you can avoid: https://www.owasp.org/index.php/Top_10_2013-T10
Looks like a well designed product, make sure you use https for login and registration, and here is a list of other web app vulnerabilities that you can avoid: https://www.owasp.org/index.php/Top_10_2013-T10