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Ken Thompson's Unix Password

leahneukirchen.org

101–110 of 665 posts

Re: Ken Thompson's Unix Password

#101
post #84

He would have had to expend quite some calories to type that out every time on an ancient keyboard with chunky keys and massive travel.

Uphill! Both ways!

How many fewer calories do I burn when typing on a low-travel keyboard rather than an old mainframe keyboard?

Re: Ken Thompson's Unix Password

#104
post #23

Earlier quoted context omitted.

30 years ago I cracked everyone’s Unix password on an old Sun computer. It didn’t take long because everyone had a password that was in the dictionary. Needless to say, people were not happy with the messenger.

No good deed goes unpunished.

More specifically, pointing out someone else's stupidity is rarely welcome.

Re: Ken Thompson's Unix Password

#105

the most amusing thing is the exclamation mark on such a banal opening move.

It's been decades. That means "Check!" right?

It's similar to English actually. It's commentary, rather than semantics.

! is good move.

? is dubious move.

If you want to carried away double/triple those.

Re: Ken Thompson's Unix Password

#106
post #23

I'm shocked at how well the old hashing stood up; sure, it's totally crackable today, but a well-picked password still took 4+ days to crack on modern hardware, which is remarkable. (Granted, it doesn't sound like they did anything fancy like throwing a hundred cloud instances at it or something; I'm not saying you should use DES today:) )

30 years ago I cracked everyone’s Unix password on an old Sun computer. It didn’t take long because everyone had a password that was in the dictionary. Needless to say, people were not happy with the messenger.

I remember in middle school using "arena" as a password.

"No one will ever guess this!"

Re: Ken Thompson's Unix Password

#108
post #65

Earlier quoted context omitted.

Yes, any sort of logic is weaker than random characters. But this was a long long time ago, hence the weak passwords. Computers couldn't crack things that fast. Today, recommendations are still based on what we expect computers will be able to crack in the foreseeable future. I remember a teacher used the password "music". We had every user's password in plaintext. This was useful when installing a new Windows domain…

On the other hand, being admin on a system is not that different. Sure, you don't have users' passwords, but you can still do arbitrary stuff in their name. Very large organizations will have some sort of system that logs this stuff and that you can't tamper with, but in a lot of places you could easily cover your tracks.

Edward Snowden would agree.

Re: Ken Thompson's Unix Password

#109

A slight nitpick with the article - `p/q2-q4` (more commonly written as "1. d4" in modern times) is not the Closed Game, it's just the first move of it. There are many, many other lines after 1. d4 besides just 1. ..d5, most of them quite open!

It is the beginning of the closed game, which is what the article says. Seems like a vacuous nitpick.

Is it? I mean, I'm not a chess expert, but can we actually call a chess game open or closed from only the first move?

Re: Ken Thompson's Unix Password

#110
post #65
post #21

I'm disappointed that it followed a pattern like that, since that's supposed to make it easier to brute-force guess.

Yes, any sort of logic is weaker than random characters. But this was a long long time ago, hence the weak passwords. Computers couldn't crack things that fast. Today, recommendations are still based on what we expect computers will be able to crack in the foreseeable future. I remember a teacher used the password "music". We had every user's password in plaintext. This was useful when installing a new Windows domain…

circa 1995:

Teacher had password written on the BACK of the clipboard they carried around everywhere.

Said teacher's password was 'qwerty'.

(Yes, it worked)

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