I am developing a social network and I would like to know if in the profile page of a user I could put the user id stored in database as a parameter in the url or is it a bad idea in terms of security?
I want the url to be bookmarkable. Should I put another thing instead of the user id?
In terms of security there's no problem in putting the user id in a url. For example StackOverflow does it already: https://stackoverflow.com/users/3477044/aliuk
What's important is to verify that the currently authenticated user is allowed to access this url and take actions on its behalf.
most socialnetwork i've been using, use username as url not id, of course it also affects seo, since u have "pretty url".
Security is really depend on how you write your code, say there is a page to edit-profile, if you put on your code something like: UPDATE .. SET .. WHERE id = $_GET['id']
no question it's dangerous, you should check every user action, like posting/editing profile, etc. who is login, not what's the id on current url
It is secure if you secure your website against sql injection. But if breach happens all users are vunerable. Only thing that hacker needs to do is find the user profile get his id. Copy output of sql injection. Go to text editor. Press ctrl - f and search for user id.
来源：https://stackoverflow.com/questions/38551448/is-it-secure-to-put-the-user-id-as-a-url-parameter