Carlos E. R. wrote: > The Thursday 2008-01-10 at 14:50 -0800, Ben Kevan wrote: >>> evince is probably safer: >>> Adobe applications are notorious for "phoning home", >>> telling Adobe what you do when, >>> and Adobe is a known bully of the copyright mafia. >>> Additionally, Adobe software tells the authors of >>> some pdf files when you open/read their documents. >> I thought that was actually in CS and put in by a 3rd party tracking >> company? > > Yep. Adobe simply allows code in the document, and code can do many > things, good and bad. It's up to the document writer to use those > capacities. > > It is not much different from viewing an html document with images > downloaded from the web: anytime you view the document downloading the > image, the server knows you are reading it. If you apply it to email, it > can act as the "recipient has displayed your email in his computer" > receipt. If you use a 1 byte image with name different for each targeted > recipient, the sender can learn which of those email addresses he sent > to are active and "worthy" of sending more spam. Right. They call those remotely loading images web bugs and Thunderbird for example blocks them by default. For browsing there are a host of tools widely used to stop this kind of snooping on individual's behaviour.
Thanks also Anders for the conciliatory note. Kind regards Philippe -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
