A Denial of Service (DoS) attack occurs when a malicious actor overwhelms a network, server, or service with excessive traffic, rendering it unavailable to legitimate users. This can disrupt normal operations, causing downtime and loss of access to important resources. In a more advanced form, a Distributed Denial of Service (DDoS) attack uses multiple compromised computers to flood the target with requests. Both types of attacks can significantly impact businesses and organizations, leading to financial losses and damage to reputation. Cybersecurity measures are essential to mitigate these threats and ensure service availability.