Many people mistakenly believe that their file-sharing system is secure. However, this is not the case in most situations. This is because most file-sharing systems are not secure in any way shape or fashion. Why is this? This could be due to errors on the file-sharing system's side or the user's side.
One of the biggest errors that are made on the file-sharing systems is that the client does not have trustable people in their own circles. If a person cannot trust their own people then they should not be in the networks. This is not a problem created by the file-sharing system, it is a problem created by the user. The user is usually unaware of the problem until they run into it. You can also know more about file sharing via https://cjissolutions.com/law-share-file-document-sharing/law-share-features/
A user needs to make sure they understand the privacy policies of the file-sharing system. In the case above, the social media system may have allowed strangers to view the profile and see the image in question. This is because most social media systems and file-sharing systems do not default to total privacy for the user.
Therefore, there are two areas that may make a file-sharing system unsafe for privacy reasons. A person can make errors in their own choice of people to allow in their file-sharing system. The system, itself, can make errors in defaulting to making all the files public. They do this because it allows the files to be searchable on the internet.
This increases the likelihood of the product or service turning up in different keyword searches. However, this hurts the privacy of the user as it relates to their files.