Questions tagged [attacks]

attempts by malicious users or software to subvert/manipulate the behaviour of an application or network

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votes
1answer
2k views

Why are coins at risk when honestly staking?

It has been repeatedly written that staking nodes should buy DDoS protection or be at risk of losing their coins. Can someone explain why an honest staker is at risk of losing his coins in case it ...
9
votes
1answer
7k views

Security measures to overcome 51% attack

I was reading During a 51% attack, What Can the Attacker Actually Accomplish? from there, i understand the after-effects are something serious, so what are the security measures which ethereum have ...
17
votes
2answers
2k views

During a 51% attack, What Can the Attacker Actually Accomplish?

During an attack on the network, where the attacker has more than 51% of hashing power (or the equivalent of Ether in PoS), what can the attacker do and not do to the chain and the contracts on it? ...
27
votes
3answers
4k views

Is Ethereum secure against an attack by quantum computers?

Does Ethereum implement Post-quantum cryptography? Or will the network break once a malicious actor gains control of an effective quantum computer?
12
votes
3answers
919 views

How are we going to mitigate DDoS Attacks in Proof of Stake?

I would like to know if I am connected to the network as a validator, how I my node will be protected of DDoS attacks.
31
votes
3answers
6k views

What is a replay attack?

During the launch of the frontier network, users were cautioned not to reuse keys from the Olympic testnet in order to prevent "replay attacks". What is a replay attack, and why would re-using a key ...

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