The following e-mail will be sent on your behalf.

 has sent the following story to you from ElectricNews.net.

The story is available from https://electricnews.net/news.html?code=6780306

Microsoft eyes image-based passwords
Tuesday, March 26 2002
by The Register


Darko Kirovski, cryptography and anti-piracy researcher at Microsoft, has
unveiled a prototype of an image-based password system. 



Kirovski showed the system to the press at the software giant's offices in
California last week, writes John Leyden. Kirovski clicked on a number of
points on a screen emblazoned with the flags of different countries which, he
explained, represented a password which users can remember more easily than a
text string, but is harder for crackers to break. 



Users would need only to recall where and in what order they clicked on the
images on display. 



There's little doubt that users frequently pick insecure default passwords (a
recent study discovered 50 percent base passwords on the name of a family member,
partner or a pet, while 30 percent choose a pop idol or sporting hero). Ethical
hackers and security consultants tell us weak or default passwords are a major
security risk. 



But are picture-based passwords any more secure than their text-based
alternative? 



For one thing, the electronic representation of a series of image selections has
to be stored somewhere, and it isn't too hard to imagine someone coming up with a
Lopht crack-style utility to break the code. 



Implementation is crucial, and any image-based system would be more complex than
a text-based system, creating more scope for sloppy coders to make a hash of it.




Neil Barrett, technical director at Information Risk Management (IRM), a security
consultancy, said an image-based password system may seem like a good idea but
the "devil is in the detail". 



IRM has set up a system for children to access a child protection Web site run by
the NSPCC (National Society for the Prevention of Cruelty to Children) using an
easy-to-use picture-based password system. 



Despite this, Barrett is against more widespread use of picture-password
technology; he argues that educating users to use strong text-based passwords
is a better solution. 



Experience shows that would-be crackers often find passwords to user PCs through
one of three techniques: dictionary attacks, finding notes on which someone has
written their password and "shoulder surfing". 



Barrett, who tells us he spent months learning to work out passwords using
shoulder surfing, said image-based passwords might make it easier to do this. 



That's because it is easier to look at mouse movements on a screen than what a
user types in, he told us. 



The Register and its contents are
copyright 2002 Situation Publishing. Reprinted with permission.