There was a time when LinkedIn would often require you to re-enter you login details, seemingly at random. Login details consist, of course, of your email addre

There was a time when LinkedIn would often require you to re-enter you login details, seemingly at random. Login details consist, of course, of your email address plus a password, and so if you used the site much you kind of got used to entering them in every time they were requested. The login form, unsurprisingly, looked very similar to the one suggesting that you give LinkedIn your email address plus you email account password. When I first noticed this, I thought that, for people who re-use passwords, this was an accident waiting to happen. I'm sure people must have been caught out by this. I was very tempted to submit this to darkpatterns.org, but the first part of the pattern (frequent re-authentication) doesn't happen any more.