E-Mail Tracking
Good article on the history and practice of e-mail tracking:
The tech is pretty simple. Tracking clients embed a line of code in the body of an email—usually in a 1×1 pixel image, so tiny it’s invisible, but also in elements like hyperlinks and custom fonts. When a recipient opens the email, the tracking client recognizes that pixel has been downloaded, as well as where and on what device. Newsletter services, marketers, and advertisers have used the technique for years, to collect data about their open rates; major tech companies like Facebook and Twitter followed suit in their ongoing quest to profile and predict our behavior online.
But lately, a surprising—and growing—number of tracked emails are being sent not from corporations, but acquaintances. “We have been in touch with users that were tracked by their spouses, business partners, competitors,” says Florian Seroussi, the founder of OMC. “It’s the wild, wild west out there.”
According to OMC’s data, a full 19 percent of all “conversational” email is now tracked. That’s one in five of the emails you get from your friends. And you probably never noticed.
I admit it’s enticing. I would very much like the statistics that adding trackers to Crypto-Gram would give me. But I still don’t do it.
teo • December 13, 2017 6:42 AM
not sure if fully relevant but here is an analysis of hacking team leaked emails.
https://labs.rs/en/metadata/
look how much they have found by watching only metadata.
-they have found when someone went on holiday
-who was late at work
-who is the boss and who is top position workers.
-that there was many agents one for continent/zone
-much more
while for the schneier article:
aren’t images and remote content blocked by default since long time?
some are also proxying the images so that you can watch them without leaks.