![]() So don’t do it! Now, it might be reasonable to assess just how important the security is on a site-by-site basis. And hackers really do try this kind of attack. The password can then be tried at other sites, and no matter how good the other sites’ security is, they cannot stop someone who already knows your password. The reason for this is that if you use the same password on many sites, a hacker can crack a database at a site that does not follow best practices, and then they have it. Don’t use the same password on many sites This is a threat you can significantly reduce by following sound practices. So the threat you should really be targeting is a criminal organization that wants to get your password and use it take your money. Passwords are a somewhat simpler problem. This is a simpler problem than cracking a good PGP encryption key, which right now is considered computationally infeasible even for the NSA and GCHQ. If you are a “person of interest” to a determined government agency the odds are they can devote enough computing power to getting your password that their odds are pretty good. The thing to keep in mind as we discuss password safety is that the objective is not to make your password ultimately uncrackable. ![]() Password entropy calculator cracked#There are things you can do to make it less likely that your password will be cracked and used against you. And as we saw in the last tutorial, such passwords are quickly discovered in a dictionary attack. Because it is a simple sequence, there is no real randomness at all, and would be quickly guessed. Sometimes it is very easy to assess, such as a password of “1234”, which all too many people use. So what is entropy, and how does it affect our passwords?Įntropy is in general the degree of randomness or disorder in any given system. ![]() Right now for most of us the key to any security in our online life is the degree of entropy in our passwords. ![]()
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