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[liberationtech] when you are using Tor, Twitter will blocked your acc

Travis Biehn tbiehn at gmail.com
Sun Jun 8 16:33:23 PDT 2014


If you have a heuristic used to apply additional scrutiny to traffic coming
from certain locations you shouldn't have:
IF it's from a bad source AND it's not in the whitelist of allowed bad
sources...

Treat them as possibly malicious and handle it like risky traffic: Throw
difficult captchas at your users and don't deny login or require password
changes.
Let users turn off logic for IP-based 'hack' attempt detection.

-Travis




On Sun, Jun 8, 2014 at 5:58 PM, Jacob Appelbaum <jacob at appelbaum.net> wrote:

> I've had my twiter account locked half a dozen times (web client,
> using Tails) in the last few weeks. It seems to be some new security
> heuristic where one is still able to login to change the password but
> the account is locked from generating new public (or DM) events.
>
> It is a super annoying "security feature" to say the least.
>
> I think some Twitter security folks are on this list - if so, I'd love
> to discuss the issue in detail. It seems like the issue is when Tor
> circuits rotate. So when I've logged in from say, a US Tor exit node,
> all is fine. After a while, I'll be exiting the Tor network through
> Germany. It appears that say, over the course of a day, I'll jump
> through ten countries. At some point, Twitter decides that this is
> abuse or evidence of hacking or something. It doesn't appear to know
> that I'm using Tor though. So while actually, I'm just consistantly
> using Tor, the GeoIP is constantly rotating. I suspect this is what
> trips the security feature in question.
>
> It would be nice if Twitter was a bit more intelligent about Tor
> usage. I wrote the BulkExitList feature on check.torproject.org for
> Wikipedia. They ironically use it to block edits from Tor. Twitter
> could use that export of data or a similar one to have a list of all
> current (updated per hour with the network consensus) exit nodes and
> then do something better than Wikipedia.
>
> All the best,
> Jacob
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