Questions tagged [denial-of-service]

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1answer
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Would a 51% attack be easier if an attacker can DoS certain nodes?

I am wondering whether a 51% attack would be simplified by being able to remotely crash miner nodes. Consider the following scenario: Malicious mining pool A controls 16% percent of the mining power ...
3
votes
0answers
143 views

Denial attacks by submitting transactions with strategically calculated gas prices

As can be understood from the title, there is a specific form of denial attack where specific transactions are blocked by submitting transactions with strategically calculated gas prices. Example 1: ...
3
votes
1answer
1k 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 ...
207
votes
7answers
136k views

What is meant by the term “gas”?

An Ethereum application that I want to use talks about needing "gas" to run. What is gas, and where do I get it?