As a lawyer, there are several steps you can take to protect your business's proprietary information:

1. Identify Your Proprietary Information:

   The first step in protecting your business's proprietary information is to identify what information is confidential and/or proprietary. This could include trade secrets, customer lists, financial data, marketing strategies, and other confidential data.

2. Establish Confidentiality Agreements:

   It is essential to establish confidentiality agreements with your employees, vendors, contractors, and other third-party entities that have access to your proprietary information. A confidentiality agreement, also known as a non-disclosure agreement (NDA), is a legal contract that prohibits the recipient from disclosing or misusing the confidential information provided.

3. Limit Access:

   Limit the number of individuals who have access to your business's proprietary information. Only allow access to those who have a legitimate business need to access such information.

4. Train Your Employees:

   Provide training to your employees on the importance of protecting the business's proprietary information. Train them on how to maintain confidentiality, how to recognize potential security risks, and how to handle sensitive information.

5. Secure Digital Data:

   Digital data is highly vulnerable to cyber-attacks, and it's important to secure your company's computer systems and networks. Use firewalls, encryption, and other secure measures to protect your business data.

6. Physical Security Measures:

   If your company stores physical documents or products, implement physical security measures such as CCTV cameras, visitor logs, and secure access control systems.

7. Monitor and Enforce:

   Regularly monitor access to your business's proprietary information and enforce your confidentiality agreements with penalties for disclosure or misuse.

It's important to note that there are potential limitations or exceptions to these measures, especially if a third party has legal access to your data. As such, you may need to consult with an attorney to implement the best possible measures to protect your business's proprietary information.