Network attacks are malicious attempts to disrupt, damage, or gain unauthorized access to computer networks. These attacks can take many forms, such as DDoS (Distributed Denial of Service), where multiple compromised systems flood a network with traffic, making it unavailable to users. Other types include phishing, where attackers trick individuals into revealing sensitive information, and man-in-the-middle attacks, where an attacker secretly intercepts communication between two parties. To protect against network attacks, organizations often implement security measures like firewalls, intrusion detection systems, and regular software updates. Educating users about safe online practices, such as recognizing phishing emails, is also crucial in preventing these attacks and safeguarding sensitive data.