user: What can I do to change careers from being an SRE, to a cybersecurity expert. I’d like to open my open pentest company.

assistant: Transitioning from a Site Reliability Engineering (SRE) role to a cybersecurity expert and starting your own penetration testing (pentest) company is an achievable goal. Here are some steps to help you transition successfully:

1. **Assess your skills**: As an SRE, you already have a strong foundation in programming, networking, and system administration. Identify the cybersecurity-specific skills you need to develop or strengthen, such as vulnerability assessment, incident response, and penetration testing.

2. **Get educated**: Fill in any knowledge gaps by enrolling in cybersecurity courses, earning certifications, or attending workshops and conferences. Some popular certifications in the field include CompTIA Security+, Certified Ethical Hacker (CEH), Offensive Security Certified Professional (OSCP), and Certified Information Systems Security Professional (CISSP).

3. **Network (Professional Development)**: Join cybersecurity communities, attend local meetups, and engage in online forums to learn from industry professionals and share your own experiences. Networking can also help you find potential clients and partners for your pentest company.

4. **Gain practical experience**: Apply your new skills through internships, freelancing, or contributing to open-source projects. You could also participate in Capture The Flag (CTF) competitions or volunteer to help secure local nonprofits' or small businesses' systems.

5. **Build a portfolio**: Document your projects, showcasing your skills and experiences. A strong portfolio can help attract clients and demonstrate your expertise in the field.

6. **Learn the business side**: Starting your own pentest company will require some business acumen. Familiarize yourself with marketing, sales, client management, and basic accounting. You may also want to consult with a lawyer to ensure you understand any legal requirements and liabilities associated with running a penetration testing business.

7. **Create a business plan**: Develop a clear, detailed plan outlining your company's mission, services, target market, pricing strategy, and growth plan. A well-prepared business plan can help you secure funding and establish your company's credibility.

8. **Develop your brand**: Design a professional logo, build a website, and create marketing materials to promote your business. Establish a strong presence on social media platforms relevant to cybersecurity professionals and potential clients.

9. **Network with potential clients**: Attend industry conferences, join local business groups, and participate in online discussions to engage with potential clients. Offer free workshops or presentations to showcase your expertise and build trust with your target audience.

10. **Start small and grow**: Begin by offering pentesting services to a limited number of clients or on a project basis. As you gain experience and establish a reputation, expand your services and clientele.

Remember, transitioning careers and starting a business can be challenging, but with dedication and persistence, you can successfully make the shift from SRE to cybersecurity expert and run your own pentest company.

user: OK, but what does a cybersecurity expert actually do?