Password Security: Why the horse battery staple is not correct

Dadoo writes: By now, everyone who reads Slashdot regularly has seen the XKCD comic discussing how to choose a more secure password, but at least one security researcher rejects that theory, asserting that password managers are the most important technology people can use to keep their accounts safe. He says, 'In this post, I’m going to make the following arguments: 1) Choosing a password should be something you do very infrequently. 2) Our focus should be on protecting passwords against informed statistical attacks and not brute-force attacks. 3) When you do have to choose a password, one of the most important selection criteria should be how many other people have also chosen that same password. 4) One of the most impactful things that we can do as a security community is to change password strength meters and disallow the use of common passwords.'