I remember I was taught a long time ago about a tool (a website that would require a sign-up) where you'd type up an e-mail address with a certain text (really sorry I can't remember what you'd write in there) within it, once the e-mail is sent and opened, an e-mail would be returned to the sender with information about the recipient such as time zone, system on which the e-mail was opened, account name etc. ... Any luck ?
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from hacking: security in practice https://ift.tt/wBD59Ro
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