password security

Saturday, August 27th, 2011 12:04 am
darkoshi: (Default)
All it takes is answering my 3 security questions correctly, and my bank lets me reset my password online? It doesn't even involve anything via email? I know that email isn't secure, but really? Isn't it a lot easier for someone to guess the answers to your security questions, than for them to guess your password, if it is a good password? Hopefully if someone enters the security questions wrong more than a few times, the system would lock them out and make the person provide other proof of their identity.

This page makes a very good point about security questions:

Even if you can't make up your own question, there's nothing that says your answer has to make sense. The only things that matter are that a) only you know the answer and b) you will always know the answer.

That's it.

The system isn't checking to see if your answers "make sense", what they're checking is that when they ask you the question the answer you give is the same as whatever you gave when you set it up.

The computer behind it all doesn't know that "Jack Sparrow" isn't a possible mother's maiden name, or that it's a rare high school that has "Toilet Bowl" as its mascot. And as long as no one else knows those are the answers you give and you always remember them then it doesn't matter in the least that they make no sense.

The answers don't have to make sense.

They just have to match.

(no subject)

Wednesday, March 9th, 2011 11:52 pm
darkoshi: (Default)
Study identifies changes to DNA in major depression and suicide - interesting... I want to read more about this turning on and off of DNA somewhen; I've heard about it before but don't understand it well.
"We have about 40,000 genes in every cell and the main reason a brain cell is a brain cell is because only a small fraction of the genes are turned on. The remaining genes that are not expressed are shut down by an epigenetic process called DNA methylation."

via [personal profile] andrewducker

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