A denial-of-service attack (DoS) is a cyberattack where excessive traffic is sent to a website on purpose. This makes the targeted computer or device inaccessible to its rightful user. A DoS attack bombards a system with so many requests that it can no longer process normal activity, blocking other users from accessing it.
How it works: Attackers flood the target with junk data or fake transactions until it crashes or slows to a halt. A distributed denial-of-service (DDoS) attack is similar, but it uses many computers at once, often controlled by a hacker through a botnet, which targets the computer and shuts it down.
In crypto, these attacks hit exchanges, blockchains, or smart contracts and mess with ongoing trades or transactions. Usually, the aim is blackmail, rivalry, or plain sabotage. DoS attacks, focus on knocking out systems which costs victims time and money.
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