It is important to be aware of the potential security issues with any type of file sharing. Some risks associated with free or public file sharing include:

1. Malware infection: dangerous computer viruses, ransomware, or spyware can enter your device through a malicious file downloaded from a file sharing service.
2. Data theft or unauthorized access: a third-party may intercept your file and steal valuable data or access your account.
3. Unclear ownership/copyright issues: it is unclear who has the rights to a file or who owns a file posted on the service.
4. Mishandling of data: depending on the service, the security protocols may be weak and may result in the mishandling of your data.

To protect yourself and your data, it is important to remain vigilant and take the following action:

1. Use strong passwords and use multi-factor authentication.
2. Monitor the file shares regularly.
3. Conduct frequent scans to detect anomalies or viruses.
4. Utilize secure protocols, such as SFTP.
5. Be aware of copyright laws and notices.
6. Thoroughly research any file sharing service prior to use.