[tor-relays] AS: "ColoCrossing" - 28 new relays

[Nathaniel Suchy]

It's scary to think there are bad people out there actively trying to harm our community :(

Cordially,
Nathaniel Suchy



Dec 12, 2018, 10:46 AM by dgoulet at torproject.org:

> On 12 Dec (09:33:58), Toralf Förster wrote:
>
>> On 12/11/18 10:54 PM, nusenu wrote:
>> >  from their fingerprints
>> I'm just curious that the fingerprints starts with the same sequence. I was
>> under the impression that the fingerprint is somehow unique like a hash?
>>
>
> If one would like to position their relay on the hashring at a specific spot,
> you can bruteforce the key generation to match the first bytes of the
> fingerprint. Usually 4 or 5 bytes are enough and it doesn't take that long to
> compute.
>
> And because the position on the hashring is predictable over time for hidden
> service *version 2*, then anyone can setup relays that in 5 days will be at
> the right position.
>
> Thus the importance to catch these relays before they get the HSDir flag that
> is 96 hours of uptime.
>
> Cheers!
> David
>
> -- 
> WzhUyhDvWQI2JZglnMWl4fhIHYln5DpMG50IrXaHPLU=
>