data, sdata and reserved parameters in Office-ATP-Safelinks

Copper Contributor

We have received a request from a "worried" user.
With us, links are converted into mails by ATP. So the users get links like:

That this is a security feature is quite clear. But what is behind the "data", "sdata" and "reserved" parameters that are integrated into the link?
What is this data needed/used for?

Some of our Users are worried that they can be tracked through these parameters.

2 Replies

C'mon Microsft. Someone will have to be able to tell you how such a link is assembled.

@Pernille-Eskebo Knowing this information would help a lot of security teams across the world.