[Ratatoskr]

Most computers will store the last week or twos worth of browsing as well as all the image files that are viewed.

That's not what the article implies. They didn't know who he was; they found him by working backwards from Expedia. That's a whole lot different from having a suspect and verifying he'd downloaded a map by looking at his cache.

[exodus]

To: George from New England
Most computers will store the last week or twos worth of browsing as well as all the image files that are viewed.

That's not what the article implies. They didn't know who he was; they found him by working backwards from Expedia . That's a whole lot different from having a suspect and verifying he'd downloaded a map by looking at his cache.
# 29 by Ratatoskr
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Which means that Expedia keeps a record of citizens who use their site,
and what the citizen does on the site,
and provides those records to government agents.

Fine, in this case they caught a killer.
Still, I don't trust this weapon in the hands of corrupt men.

[taxcontrol]

Since the guy printed the web page, it would have included a token (a string of numbers sometimes called a key) that would have identified the page. The need for this token is so that future navigation (zoom in/out, pan up/down, etc) can reference the same map.

It would then be a trivial event to go to a suspect's computer and look through the web cache for that token. Get a hit and you've bagged your man.