DoS attacks, or Denial of Service attacks, occur when an attacker overwhelms a network, service, or application, making it unavailable to legitimate users. In the context of cryptocurrencies, these attacks can target blockchain networks or exchanges.Attackers might flood a network with excessive traffic, leading to slow transaction processing or complete outages. This disrupts users’ ability to send or receive transactions, which can harm trust and confidence in the platform.A common method is the “Sybil attack,” where a single entity creates many fake nodes to dominate the network and disrupt normal operations. Another method involves exploiting vulnerabilities in software to crash or slow down the system.DoS attacks can have significant repercussions, including financial losses for exchanges and users, and can prevent timely access to critical services or information. As cryptocurrency adoption increases, the threat of such attacks remains a concern, prompting the need for robust security measures.