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: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org