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[tor-relays] Re: Sybil Attack on 2025-11-20 - please setup your AROIs :)



Helped create tooling and reached out to the largest operators to improve AROI setups.
https://aroivalidator.1aeo.com and https://github.com/1aeo/AROIValidator

In last 48 hours, ~1k more relays are now validated, total around 3k out of 10k relays (~30%). Chasing down another 500.

Still seeing missing validation from larger operators:
tuxli: 13 out of 95. Error: Fingerprint not found in rsa-fingerprint.txt (13 relays)
0xcc01.de: 74 out of 74. Error: DNS resolution failure - domain does not resolve (74 relays)
relayon: 46 out of 46. Error: SSL/TLS handshake failure (46 relays)
digitalcourage.de: 30 out of 30. Error: 404 Not Found for .well-known/tor-relay/rsa-fingerprint.txt
www.f3netze.de: 1 out of 25: Error: DNS lookup failed for subdomain
artikel5ev.de: 24 out of 24. Error: Fingerprint not found in rsa-fingerprint.txt (24 relays)


On Saturday, November 22nd, 2025 at 3:46 PM, Roger Dingledine via tor-relays <tor-relays@xxxxxxxxxxxxxxxxxxxx> wrote:

> 

> 

> On Fri, Nov 21, 2025 at 08:15:16PM -0000, forest-relay-contact--- via tor-relays wrote:
> 

> > It looks like all the newly added relays, or at least all the ones that
> > I was looking at, have shut down. I suppose whoever put them up has now
> > realized that they have been detected. Will all the fingerprints be
> > blacklisted anyway?
> 

> 

> Actually, the relays are still running, at least at this moment. (You
> can check this yourself by telneting to their ORPort.)
> 

> They appear down on the metrics page because they are no longer in the
> consensus, because a threshold of the directory authorities are rejecting
> them (as of about 30 hours ago).
> 

> --Roger
> 

> _______________________________________________
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