Cookies can’t be stolen unless someone has direct access to that device. if you don’t want to keep sessions when logging in or if you’re using a shared device, you don’t check the “remember me” option when logging in.
Also browsers support some sort of private browsing or “incognito“ mode. When you use it, all cookies and temporary files associated with the session are deleted when the browser window is closed.
This is a browser setting, not an IPB one.
https://www.computerworld.com/article/3356840/how-to-go-incognito-in-chrome-firefox-safari-and-edge.amp.html