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Which is, obviously, very wrong as it incentivises users to waste effort and time applying silly measures instead of actually fixing the problem where it occurs. Realising single log out (SLO) is a complex problem as you must invalidate sessions of each visited systems.Websites have two duties when logging a user out, according to OWASP: Thus, in a world where website developers respect their duties, there should be no basis for following such silly advice. On some sites you will, on others you won't, depending on that cache header. SLO is often implemented by just giving this advice to close the browser thereby invalidating all sessions credentials.And if websites don't, they're likely to be liable for not taking the necessary means to protect users' personal data. This technique is often used when a website uses basic or windows authentication since there isn't a way to "log out".programming forums Java Java JSRs Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Products This Site Careers Other all forums Hi!I have a problem with logout function: I have a principal web page with a button, named "Logout", which calls the function which makes logout and returns a simple html page with written " you are disconnected".