Sybil Attacks

Comments discuss vulnerabilities to Sybil attacks in decentralized networks and protocols, questioning resistance, prevention strategies, and referencing examples like Bitcoin.

📉 Falling 0.2x Security
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Keywords

HN UNICEF I.e IPFS E.g wikipedia.org nodes attack attacks network trusted attacker secret decentralized centralized bitcoin

Sample Comments

steckerbrett Oct 23, 2015 View on HN

That's pretty vulnerable to sybil attacks.

RoboTeddy Sep 6, 2013 View on HN

Could this be a Sybil attack? Can the anonymity of users be compromised by an attacker that owns some great portion of the nodes?

dboreham Jan 14, 2021 View on HN

The problem you describe is called Sybil resistance and is known to be hard, but there are some example working systems such as Bitcoin.

pmorici Feb 12, 2017 View on HN

How do you know bob didn't setup many nodes to perform a sybil attack on you? You don't.

zitterbewegung Jan 27, 2017 View on HN

Could I perform a Sybil attack on the network?

woojoo666 Aug 27, 2022 View on HN

This is just a sybil attack without the blockchain

EGreg Oct 20, 2020 View on HN

How can you prevent Sybil attacks?

stebalien Jul 16, 2024 View on HN

I can try. But I'm pretty sure what they're trying to do is fundamentally impossible without some kind of sybil protection.

ezyang Jul 21, 2012 View on HN

Are we still talking about Sybil attacks?

grlass Mar 31, 2021 View on HN

Is this Sybil attack resistant?