There are several measures that can be taken to protect against unauthorized access, including:
1. Implementing strong password policies: Encourage the use of complex passwords that are difficult to guess and require regular password changes.
2. Enabling multi-factor authentication: Require users to provide additional verification, such as a code sent to their phone, in addition to their password.
3. Limiting access privileges: Only grant access to the systems and data that are necessary for each user's role, and regularly review and update access permissions.
4. Monitoring and logging access: Keep track of who is accessing systems and data, and regularly review logs for any suspicious activity.
5. Encrypting sensitive data: Use encryption to protect data both in transit and at rest, making it more difficult for unauthorized users to access.
6. Regularly updating software and systems: Keep all software and systems up to date with the latest security patches to protect against known vulnerabilities.
7. Educating users: Train employees on best practices for protecting against unauthorized access, such as avoiding phishing scams and being cautious with sharing login credentials.