Some of the most common types of cyber attacks include:

1. Phishing: This involves tricking individuals into providing sensitive information such as passwords or credit card details. Prevention involves educating users about how to recognize phishing attempts, using email filtering systems, and implementing two-factor authentication.

2. Malware: Malicious software can be used to steal sensitive information, disrupt operations, or gain unauthorized access. Preventive measures include using antivirus software, keeping operating systems and software updated, and being cautious about downloading attachments or clicking on links from unknown sources.

3. DDoS (Distributed Denial of Service) attacks: These attacks overwhelm a system with a flood of traffic, rendering it inaccessible. To prevent DDoS attacks, organizations can use DDoS mitigation services, implement network firewalls, and ensure adequate server capacity to handle sudden spikes in traffic.

4. Man-in-the-Middle (MitM) attacks: In a MitM attack, the attacker intercepts communication between two parties to eavesdrop or manipulate the exchange of information. Prevention includes using encryption for communication, utilizing secure network connections, and verifying the identity of communication partners.

5. Ransomware: Ransomware encrypts a victim’s files and demands payment for their release. Prevention involves regular data backups, educating users about suspicious email attachments and links, and deploying robust cybersecurity solutions that can detect and block ransomware attacks.