Cloud file sharing makes it easy to work with outside people: an accountant, a consultant, a vendor, a family member's representative. The same convenience creates a quiet risk. Someone shares a folder for a project, the project ends, and the access stays. Years later, an outside party still has a way into files that may include protected health information, financial records or personnel documents.
A link that works for anyone who has it can be forwarded, posted or discovered. It leaves no record of who actually opened the file.
Guests invited by email often keep access indefinitely unless someone removes them.
A guest added to a parent folder may see everything inside, including files added later.
Files owned by someone who left may keep external shares that nobody remembers.
The exact options depend on your platform, but the following controls are common in business-grade cloud storage.
Limit external sharing by default. Allow it only for specific users or groups who need it, rather than for everyone in the organization.
Disable or restrict anyone-with-the-link sharing. Prefer links that require sign-in or are limited to named people.
Set expiration dates on guest access and on shared links where the platform allows it.
Require sign-in verification for guests so that a forwarded link is not enough.
Use view-only permissions unless editing is truly required, and consider turning off download for sensitive material.
Restrict sharing to approved domains if you regularly work with the same outside organizations.
Turn on audit logging so you can see who shared what and who accessed it.
Apply sensitivity labels or warnings to folders that contain protected health information, where supported.
Create a separate folder or site for each outside collaboration, rather than sharing from the main departmental folder. That way, removing the project folder removes the access. Do not share resident records through general file sharing at all unless your compliance team has approved the method and a business associate agreement is in place with the provider.
Settings only help if someone looks. A quarterly review keeps things from drifting.
List all guest users and confirm each still has a business reason for access.
List externally shared files and folders, and ask owners whether each share is still needed.
Remove access for completed projects and ended vendor relationships.
Check files owned by former employees, and transfer or archive them.
Look at unusual activity, such as large downloads by a guest.
Assign each review to a named person and record the date. For a small organization this may take under an hour.
Add a step to vendor onboarding and offboarding: when a contract starts, decide what the vendor needs access to and for how long; when it ends, remove the access the same week. Do the same for projects and for staff departures.
Train staff briefly as well. People share files with good intentions, and a short explanation of why links should be limited and where to ask for help makes a real difference.
If a review turns up an old public link to a file with sensitive information, remove it right away, check the access logs if available, and involve your privacy officer to decide whether the exposure needs further evaluation under HIPAA.
If a full review feels like too much, begin with two things: turn off anyone-with-the-link sharing for the folders that matter most, and list every guest account. Those two steps usually remove most of the risk in an afternoon.
UnityCare IT can review your cloud sharing settings, produce a list of external users and shared links, and help set defaults and reminders so that access ends when the need does.
Microsoft 365, cloud storage and tested backups with access controls built in.
Call or text: 405-285-3845
New customers: start@unitycareit.com
Existing customers: support@unitycareit.com
Address: UnityCare Technologies, 2524 N Broadway Ste 554, PMB 947974, Edmond, Oklahoma 73034-4172