Comment by wky
13 hours ago
It's possible that Instructure's servers got compromised:
dig canvas.ucdavis.edu
[...]
;; ANSWER SECTION:
canvas.ucdavis.edu. 1974 IN CNAME ucdavis-vanity.instructure.com.
ucdavis-vanity.instructure.com. 60 IN A 18.173.121.125
ucdavis-vanity.instructure.com. 60 IN A 18.173.121.103
ucdavis-vanity.instructure.com. 60 IN A 18.173.121.15
ucdavis-vanity.instructure.com. 60 IN A 18.173.121.18
dig canvas.duke.edu
;; ANSWER SECTION:
canvas.duke.edu. 300 IN CNAME duke-vanity.instructure.com.
duke-vanity.instructure.com. 60 IN A 18.173.121.125
duke-vanity.instructure.com. 60 IN A 18.173.121.18
duke-vanity.instructure.com. 60 IN A 18.173.121.103
duke-vanity.instructure.com. 60 IN A 18.173.121.15
that's what the screenshot says. They rooted Instructure servers.