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Re: [tor-bugs] #4666 [Company]: Write proposal for proof-of-work service
#4666: Write proposal for proof-of-work service
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Reporter: mikeperry | Owner: mikeperry
Type: task | Status: new
Priority: normal | Milestone:
Component: Company | Version:
Keywords: | Parent:
Points: | Actualpoints:
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Comment(by mikeperry):
Replying to [comment:5 rransom]:
> See [http://www.cl.cam.ac.uk/~rnc1/proofwork.pdf].
It appears the "failure" of proof-of-work in this paper hinges critically
on the one-to-many ability of legitimate email to be sent to multiple
recipients and via mailing lists, which would cause bottlenecks for a
considerable percentage of legitimate users. Web services do not have this
property in general.
Furthermore, email proof-of-work is competing against rather highly
effective spam filters. Web services don't really have such highly-
effective general-purpose technology. Our proof of work service would only
be competing against Captchas and IP bans.
Also of interest is that as spam has become less profitable in recent
years, spam volumes have actually dropped considerably. Increasing the
cost of sending mail did in fact lower spam volume. It is just that
improved filtering, user education, and botnet takedowns is what caused
this particular increase in cost, not proof of work.
I am not convinced :).
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4666#comment:6>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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