# Public Bridges / Differents PT
**URL:** https://forum.torproject.org/t/public-bridges-differents-pt/14546
**Category:** Relay Operator
**Created:** [September 10, 2024, 1:02am UTC](https://forum.torproject.org/t/public-bridges-differents-pt/14546 "2024-09-10T01:02:20Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@bakunin1848](https://forum.torproject.org/u/bakunin1848)
#### Post date: [September 10, 2024, 1:02am UTC](https://forum.torproject.org/t/public-bridges-differents-pt/14546/1 "2024-09-10T01:02:20Z")
Regarding this old topic:
> [@\[tor-dev\] Tor Bridges and Snowflakes detection attack](https://forum.torproject.org/t/tor-dev-tor-bridges-and-snowflakes-detection-attack/6184):
>
> Hi, Seems an attacker has found a way to enumerate ~300000 snowflakes and many bridges. I couldn't find any discussion about this in the archive. Thanks,
Now they list all type of bridges with different PT including Webtunnel
Do you know from Tor how to mitigate or avoid these scans or it’s impossible to stop this?
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### Author:  [@meskio](https://forum.torproject.org/u/meskio)
#### Post date: [September 11, 2024, 11:26am UTC](https://forum.torproject.org/t/public-bridges-differents-pt/14546/2 "2024-09-11T11:26:26Z")
Making it possible for users to find a working bridge while hard for censors to get all bridges is one of the hardest problems we face when looking into making it possible to connect to Tor in places where they try to block it. We have to recognize that there are not perfect solutions.
But we are working on several approaches to make it hard to list all bridges:
- From one side we are doing incremental improvements in the existing distributors to make it this kind of attack harder.
- We are working heavily in improving snowflake where this kind of attacks are not very useful, as IPs are ephemeral.
- For the long term we are working on [lox](https://gitlab.torproject.org/tpo/anti-censorship/lox) that will be a huge step on making those kind of attacks very hard.
We always keep trying new approaches and reevaluating if the current ones make sense. Like for example we found out that captchas are very easy for censors to bypass while very annoying to users, so we are stopping using them to move to other mechanisms.
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### Author:  [@system](https://forum.torproject.org/u/system)
#### Post date: [September 12, 2024, 11:26am UTC](https://forum.torproject.org/t/public-bridges-differents-pt/14546/3 "2024-09-12T11:26:54Z")
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