Graffiti as passwords


	Graffiti as passwords

wildcat

11-5-2007 2:52 AM

660 views

tags:

graffiti, technology, internet, password, memory, communication security, privacy

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://www.clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/9033a539-801f-4256-9a0b-6b3be6b0221f/9BDDD5DD-80D6-4FA5-BA6E-978B7FAF6496/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://arstechnica.com/news.ars/post/20071103-graffiti-as-password-secure-and-memorable.html" href="http://arstechnica.com/news.ars/post/20071103-graffiti-as-password-secure-and-memorable.html" style="font-size: 11px;">arstechnica.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://arstechnica.com/news.ars/post/20071103-graffiti-as-password-secure-and-memorable.html">
One of the largest security challenges many organizations face come from the most basic aspect of security:  user passwords.  Humans simply have a limited capacity to remember otherwise insignificant streams of letters and digits; as a result, they often choose passwords that are easier to remember.  Those memorable passwords, however, can fail in the face of dictionary attacks or guesses based on information such as birth dates or the names of family members.  <A href="http://www.sigsac.org/ccs/CCS2007/">This week's meeting</A> of the Computer and Communications Security interest group of the Association for Computing Machinery saw the description of the latest attempt to balance security and obscurity:  an improved form of the "Draw a Secret" method</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://arstechnica.com/news.ars/post/20071103-graffiti-as-password-secure-and-memorable.html">
The basic concept behind Draw a Secret (DAS) is that humans excel at image recognition and memory, so "passwords" should be designed to leverage that ability</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://arstechnica.com/news.ars/post/20071103-graffiti-as-password-secure-and-memorable.html">Initial implementations simply tracked the ability of people to use a stylus to draw a free-form shape on a touch-sensitive screen</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/9BDDD5DD-80D6-4FA5-BA6E-978B7FAF6496/blog/" title="blog or email this clip"><img src="http://content8.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>