When Regular Expression Filters Go Bad

Oops, Cisco rightly messed up this morning by publishing the home page of their web site without the letter 't'.  It's amusing enough to see their opinions on a "Daa Cener", but this was one better: the entire HTML source for the page was buggered up, not just the visible text.  Stylesheets went missing, images failed to load, links didn't work.

Of course, Cisco aren't exactly saying a whole lot about why this happened, but I'd give a fair guess that some poor webmonkey messed up a regular expression on some whole page output filter.  Oh dear.

Here are some PDFs of the page view and the html source.

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Ha! Dude that's CLASSIC.