I write to better educate myself as I go through CTFs and Bug Bounties. If anything I have written is incorrect, please let me know and send me a link to an article to read to better educate myself.
Location
Seattle
Education
Information Technology BA and Software Engineering Bootcamp Grad
Most of these temporary email providers provide a web UI for retrieving emails from the temporary inbox. If they copy the link and paste it into new tab, you'd lose the Referrer. If they're lazy and just click it then it'll we'll get the Referrer and our logic will work.
There might be browser settings that drop the Referrer for the sake of privacy, or extensions that do this, so it's not perfect but I collect enough new domains from this method that I was glad I stumbled on it.
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Cant Referrer headers be changed?
Most of these temporary email providers provide a web UI for retrieving emails from the temporary inbox. If they copy the link and paste it into new tab, you'd lose the Referrer. If they're lazy and just click it then it'll we'll get the Referrer and our logic will work.
There might be browser settings that drop the Referrer for the sake of privacy, or extensions that do this, so it's not perfect but I collect enough new domains from this method that I was glad I stumbled on it.