Re: [saag] Ubiquitous Encryption: spam filtering

Hi John,

There is some text in the draft. If we missed anything or didn't go into
enough detail yet, contributions are welcome, especially if you are active
in this area.

Thank you!

On Tue, Jun 23, 2015 at 11:19 AM, John Levine <johnl@taugh.com> wrote:

> I can't find in the archives whether the ubiquitous encryption
> discussion has looked at the knotty issues of spam filtering.
>
> It's a really hard problem -- filtering is essential to keep mail
> usable, both due to the sheer volume of the spam and the need to keep
> phishing and malware away from recipients.  You can do some filtering
> on the envelope, but there's no substitute for looking at the contents
> of the message.
>
> All of the middlebox issues apply, it's much easier to do the
> filtering on a large shared server than at endpoints.  Partly that's
> because the endpoints often have limited bandwidth and compute power
> (think phones) and partly it's because effective filtering needs to
> consult shared frequently updated lists of malware signatures and
> malicious urls.
>
> R's,
> John
>
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-- 

Best regards,
Kathleen