They can already rip people off, w/out BIMI. BIMI limits their ability to
do so in two ways:

1) It raises the cost, because BIMI setup costs more.
2) It makes it harder for scammers to impersonate trusted brands.

-Tim

On Thu, Jan 11, 2024 at 12:58 PM Randolf Richardson, Postmaster via mailop <
mailop@mailop.org> wrote:

> > I might have missed something, but wouldn't that be a phisher's wet
> dream?
>
>         Indeed, and because the BIMI record references a URI to load the
> logo from, so the scammers (spammers, phishers, malware/virus
> distributors, etc.) could simply specify a different logo file with a
> recognized brand to make their bad eMail appear legitimate.
>
> > Most spammers know very well how to do a mail with valid DMARC. So, now
> > they only need to send a valid mail from any throw away cheap domain and
> > in their BIMI add the logo of paypal?
>
>         Yes.
>
> > I understand it's not great to have to pay for the
> > verification/certification, but leaving the door open to abuse is a
> > dangerous path to take.
>
>         Some scammers make a lot of money ripping people off.  They could
> easily afford set up a company, get a Trademark, and then use a
> different logo image when sending their junk eMails.
>
>         So, once this happens often enough, end-users will just not trust
> the BIMI logos to be reliable and it will be another internet feature
> that security educators will recommend be taken with a grain of salt.
>
> > Being on the antispam side, I would hate to have to start implementing
> > BIMI spoof checks.
>
>         I agree.  Even if someone else makes a SpamAssassin plug-in or a
> milter, it still adds to the overall complexity and will have a
> potentially-noticeable impact on busier systems ... and then everyone
> has to pay indirectly for BIMI with slower performance of system
> upgrades to counter the slower performance.
>
> > Regards,
> > Laurent
> >
> > On 11.01.24 00:05, Louis Laureys via mailop wrote:
> > >      We decided to keep this because I read that some webmail clients
> are
> > >      planning to support BIMI without checking for certificates, or,
> > >      perhaps, also displaying a little lock icon in the corner of the
> > >      sender's BIMI-style logo image where certification is verified.
> > >
> > > This is exactly what I have in mind for my client, thanks for
> publishing your
> > > logo in an easily accessible and standard way :)
> > >
> > > Groetjes,
> > > Louis
> > >
> > >
> >
> > _______________________________________________
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> > mailop@mailop.org
> > https://list.mailop.org/listinfo/mailop
>
>
> --
> Postmaster - postmas...@inter-corporate.com
> Randolf Richardson, CNA - rand...@inter-corporate.com
> Inter-Corporate Computer & Network Services, Inc.
> Vancouver, British Columbia, Canada
> https://www.inter-corporate.com/
>
>
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>
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