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Questions tagged [attacks]

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15 questions with no upvoted or accepted answers
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276 views

How to mitigate layer 7 attacks on hidden services?

I've observed the following: The Tor client establishes reverse connections to random relays and any further hidden service traffic is tunneled trough these connections. This means: There are no ...
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0answers
71 views

What kinds of attack can a bridge carry out?

I have been recently doing some research on anonymity implications of using a bridge, and wrote a tool (not very well written though) for setting up a malicious bridge node. However, I am not clear ...
2
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1answer
301 views

Why does TOR not intentionally choose nodes from different countries?

I've read than if an attacker could control both entry and exit node into the tor network he could easily de-anonymize TOR users. I have also read that TOR chooses nodes at random. So my question is ...
1
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1answer
90 views

Increasing number of middle relays weakens the anonymity?

Tor nodes build encrypted TLS sessions between neighbors to multiplex circuits of users. Multiplexing helps to anonymize users (?). With an increasing number of middle relays multiplexing becomes ...
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0answers
49 views

Noise sender function in TOR?

Does TOR have the service of contacting me with x bytes of noise and ignore the garbage I return? Background I recently heard a talk about a company that is privacy aware. They run smart ...
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0answers
62 views

Can someone explain this?

Can someone please explain this? still unfamiliar i mean this ip's looks suspicious is this a ddos attack?m new to relay operating so please explain thank you.
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0answers
72 views

Tor Brower Compromised?

My firewall is configured to warn me of any changes to my tor browser when I'm on line. It also lists the ip address and the originating website. Recently, it detected a change which was initiated ...
1
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1answer
244 views

Hidden Service as client or relay?

Take a look, what is the difference between Tor-Browser in onion encrypted traffic and Apache service responses in onion encrypted traffic? Tor-Browser: sent 1% / receive 99%. It is simply, ...
1
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0answers
54 views

Is it possible to perform a timing/correlation attack for a stream which sends only 3 packets?

I'd like to know if it is possible to perform a timing/correlation attack on a Communication which uses Tor, if the communication is done in 3 packets. I am reffering to passive corelation attacks, ...
0
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0answers
63 views

Track Tor circuit via ISP logs

I have some question about the very basics of tor, as this keeps bugging me now for some time: As far as I know every tor node is only aware of the ip address of the following node. For example the ...
0
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1answer
288 views

I got effected by GANDCRAB ransomeware and all my files & documents got encrypted and .WRCOR file extension got added orginal file name

All my files & documents got encrypted and appended with file extension .wrcor. I was accessing a file from Tor browser. Suddenly I saw my files got converted and encrypted. Al the original file ...
0
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1answer
132 views

Simulating Correlation attacks on Tor using Shadow

Is it possible to simulate correlation attacks on Tor using Shadow? If it's possible what's the easiest way to implement it? If it's not possible, then is there any other simulators that can be used ...
0
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1answer
553 views

Prevent traffic correlation/timing attack

When running a hidden service, should the operator run own entry guard? Logic be that if the entry guard run by operator, no possible way for traffic correlation by malicious people. Traffic ...
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0answers
147 views

How does selecting new guard relays work?

I've been told guards are selected when a client first connects to the Tor network and used until they disappear. What constitutes disappearing? Do all guards need to disappear (and then the whole ...
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1answer
741 views

Stopping a DDoS attack on Tor daemon

I've already check How to protect a hidden service against DDOS attack? and How to deal with DDOS attacks? and How to mitigate layer 7 attacks on hidden services?. The problem is not DDoS of web ...