Cppreference:Privacy policy

We're not doing anything creepy:


 * If you make anonymous edits to pages, we'll publicly display your IP address next to your changes.
 * If you create an account and log in, we'll bake a tasty cookie and use it to remember you.
 * We use Google analytics to track statistics.
 * We keep recent Apache traffic logs.

In other words, we do everything you would expect from a friendly neighborhood geek-run wiki.