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2 votes

Can a tor hidden service be successfully attacked via (D)DoS?

The examples you mention do not apply: Tor only works with TCP streams, not UDP. It is probably easier to overload the Tor that hosts the Hidden Service than the actual web server behind it, by just ...
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  • 3,745
2 votes

What happens if I create a flood of hidden services?

This would generally hurt you more than the Tor network. Directory Authorities will receive your request to create a metric bajillion hidden services, let's say, but this is basically just a half of a ...
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2 votes

Are low bandwidth DoS attacks performed over the Tor network a problem to be considered?

Is there any other serious obstacle for such attacks over Tor? Many services will automatically block exit nodes, or will be more strict with detecting possible attacks from exit nodes. Even if they ...
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  • 21
2 votes
Accepted

Will the network know if a malicious guard keeps dropping connections?

Do Tor authority servers, or probing servers, or those clients who were dropped by the malicious guard have any mechanism to report it to the authority servers so that the malicious guard will be ...
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  • 10.8k
1 vote

Are there problems on tor netowrk?

Some guy on #tor@oftc.net are saying that there is an attack (ddos) to some relay... is that true ? Not for all relays, at least (I operate one). There are around 6000-7000 relays, its unlikely any ...
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  • 10.8k
1 vote

Had valet nodes been implemented?

Not yet, to my knowledge. The concept is rather useless, by the way - at least with present Tor architecture: yes, it makes DoS a bit more difficult to perform, and no, DoS is an avalanche-like ...
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  • 5,421
1 vote

If everyone used Tor, how would websites protect themselves from malicious traffic?

There are 2 kinds of malicious traffic: Traffic that is the same as 'normal' traffic, but the amount/volume makes it malicious. [D]DoS. (I don't really have an answer for this one.) Traffic that ...
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  • 3,745
1 vote

If my network link is subject to frequent, short, outages (a gentle form of DoS attack?), can this help promote other nodes to guard before mine?

Here's my 2nd answer: If someone else is trying DoSing you over the Tor network there is a chance that this will be prevented from the guard relay. If not it could be an advantage for other relay ...
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1 vote

DoS attacking Tor users

There really isn't an easy way to discover a persons IP address through Tor. The problem for you is really deployment. In my (not so professional) opinion, your best bet would be to have each user ...
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  • 189

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