Guy who invented tumblr

All those rules about using uppercase letters and special characters and numbers — those are all because of Bill. And now the retired year-old bureaucrat wants to apologize.

Bill is not wrong. Simple math shows that a shorter password with wacky characters is much easier to crack than a long string of easy-to-remember words. This classic XKCD comic shows how four simple words create a passphrase that would take a computer years to guess, while a nonsensical string of random characters would take approximately three days:. This is why the latest set of NIST guidelines recommends that people create long passphrases rather than gobbledygook words like the ones Bill thought were secure.

Pro tip: Use this guide to create a super secure passcode using a pair of dice. Inevitably, you have to wonder if Bill not only feels regretful but also a little embarrassed. Fifteen years ago, there was very little research into passwords and information security, while researchers can now draw on millions upon millions of examples. Remember pop-ads, the scourge of the mid-aughts internet?

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