<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">2014-05-21 2:30 GMT+02:00 Jerry Leichter <span dir="ltr"><<a href="mailto:leichter@lrw.com" target="_blank">leichter@lrw.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Let's divide received mail into two buckets: Email from someone I already know, and email from someone I don't know. Messages in the first bucket should use a private key agreed upon between me and that other party. A spammer can't create mail like this. (Well, he *can*, but only by being present "inside" my correspondent, with access to his private key store. If my correspondent is vulnerable to that kind of thing, our communication isn't secure anyway - and in fact the spam provides me with a service, as it tells me my correspondent has been compromised.)</blockquote>
</div><div class="gmail_extra"><br></div>Companies on Facebook are working hard to find out how much people are willing to trade "not being spammed" for "maybe winning something".<br><br></div></div>