http://bentasker.i2p/posts/blog/security/osinting-the-os-inters-and-the-dangers-of-meta-data.html
Finally, an almost definitive level of confirmation comes from [subdomain].cellebrite.cloud itself: there's an option for SAML login, which takes you to cellebrite.okta.com We already know that Cellebrite are an Okta customer (because crt.sh shows that they previously acquired a cert for okta.cellebrite.com ) so this helps link disparate things we knew.