Internet and e-mail policy and practice
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07 Feb 2012
It shouldn't be a big surprise to hear that phishing is a big problem for banks.
Criminals send email pretending to be a bank, and set up web sites that look
a lot like a bank.
One reason that phishing is possible is that e-mail has no built in security,
so that if a mail message comes in purporting to be from, say,
firstname.lastname@example.org, there's no easy way to tell whether the
message is really from bankofamerica.com, or from a crook.
Mail authentication schemes like DKIM and
the new dmarc.org group use cryptographic
signatures to help authenticate mail and prove that it really is from who
it purports to be from.
So, if the mail can authenticate the sender, the phishing problem goes
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