Here are a few tips on how to protect your data when using public cloud services:

1. Encrypt your data. Use tools such as HTTPS, SSL, and TLS to secure your connections.
2. Backup your data. Have a backup plan and regularly back up your data.
3. Control access to your data. Set privileges for your team members or third-party users. Restrict access to users with legitimate needs.
4. Monitor and audit your data. Keep track and audit access to your data. Restrict changes to authorized personnel only.