There are several types of penetration testing, each with its own focus and objectives. Some common types include:

1. Network Penetration Testing: This involves assessing the security of network infrastructure, such as servers, routers, and firewalls, to identify vulnerabilities that could be exploited by attackers.

2. Web Application Penetration Testing: In this type, security experts examine web applications (websites, web services, etc.) to find vulnerabilities like SQL injection, cross-site scripting (XSS), and more.

3. Wireless Network Penetration Testing: Evaluates the security of wireless networks, including Wi-Fi, to detect weaknesses that could lead to unauthorized access.

4. Social Engineering Testing:Focuses on human vulnerabilities by simulating social engineering attacks, like phishing or impersonation, to see how employees respond.

5. Mobile Application Penetration Testing:Assesses the security of mobile apps, looking for vulnerabilities that could compromise user data or the device itself.

6. Cloud Infrastructure Penetration Testing:Evaluates the security of cloud-based services and infrastructure, such as AWS, Azure, or Google Cloud, to identify misconfigurations or vulnerabilities.

7. Physical Penetration Testing:Involves physically testing the security of a facility or data center, including access control, surveillance, and other physical security measures.

8.Red Team vs. Blue Team Exercises:Red teams simulate attackers, while blue teams defend against them. These exercises provide a holistic assessment of an organization's security posture.

9. IoT (Internet of Things) Penetration Testing: Focuses on assessing the security of IoT devices and the networks they connect to, addressing potential vulnerabilities.

10. API Penetration Testing:Evaluates the security of application programming interfaces (APIs) that enable communication between different software components.

Each type of penetration testing serves a specific purpose in identifying and mitigating security risks, helping organizations strengthen their overall security posture. The choice of which type to use depends on an organization's needs and the assets it wants to protect.