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

%3CLINGO-SUB%20id%3D%22lingo-sub-1637050%22%20slang%3D%22de-DE%22%3Edata%2C%20sdata%20and%20reserved%20parameters%20in%20Office%20ATP-Safelinks%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1637050%22%20slang%3D%22de-DE%22%3E%3CP%3EWe%20have%20received%20a%20request%20from%20a%20%22worried%22%20user.%20%3CBR%20%2F%3E%20With%20us%2C%20left%20are%20converted%20into%20mails%20by%20ATP.%20So%20the%20users%20get%20links%20like%3A%20%3CBR%20%2F%3E%20%3CA%20href%3D%22https%3A%2F%2Feur04.safelinks.protection.outlook.com%2F%3Furl%3Dhttps%253A%252F%252Fgetsupport.atlassian.com%252Fservicedesk%252Fcustomer%252Fportal%252F20%252FGHS-191321%253Fsda_source%253Dnotification-email%26amp%3Bdata%3D01%257C01%257C%257C571bb1d7861543bac5c708d850981062%257C6e0bfede3fcb4518a16565dc14fe5620%257C0%26amp%3Bsdata%3DSYE9eiOYbZb5HG8EPKlo%252FGsvhL9sJQ%252BpSpVr4TjZJbI%253D%26amp%3Breserved%3D0%22%20target%3D%22_blank%22%20rel%3D%22nofollow%20noopener%20noreferrer%22%3Ehttps%3A%2F%2Feur04.safelinks.protection.outlook.com%2F%3Furl%3Dhttps%253A%252F%252Fgetsupport.atlassian.com%252Fservicedesk%252Fcustomer%252Fportal%252F20%252FGHS-191321%253Fsda_source%253Dnotification-email%26amp%3Bdata%3D01%257C01%257C%257C571bb1d7861543bac5c708d850981062%257C6e0bfede3fcb4518a16565dc14fe5620%257C0%26amp%3Bsdata%3DSYE9eiOYbZb5HG8EPKlo%252FGsvhL9sJQ%252BpSpVr4TjZJbI%253D%26amp%3Breserved%3D0%3C%2FA%3E%3C%2FP%3E%3CP%3EThat%20this%20is%20a%20security%20feature%20is%20quite%20clear.%20But%20what%20is%20behind%20the%20%22data%22%2C%20%22sdata%22%20and%20%22reserved%22%20parameters%20that%20are%20integrated%20into%20the%20link%3F%20%3CBR%20%2F%3E%20What%20is%20this%20data%20needed%2Fused%20for%3F%3C%2FP%3E%3CP%3ESome%20of%20our%20users%20are%20worried%20that%20they%20can%20be%20tracked%20through%20these%20parameters.%3C%2FP%3E%3C%2FLINGO-BODY%3E
Occasional 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:
https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgetsupport.atlassian.com%2Fservice...

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.

1 Reply

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