How can you prevent data breaches during file transfers?

Many data breaches are not caused by sophisticated hacks, but by errors in everyday processes, such as sending files. A wrong email address, an unsecured download link, or inadequate access controls can be enough to expose sensitive information to unauthorized parties.

For organizations that handle personal data or confidential documents, secure file transfer is therefore not merely a technical detail, but an essential component of risk management.

What is a data breach during file transfer?

A data breach during file transfer occurs when personal data—often contained in confidential documents—is inadvertently made accessible to unauthorized parties. This can happen, for example, due to a misdirected message or insufficient controls over who has access to sent files.

Under the GDPR, a data breach occurs when personal data is lost, altered, or accessed by unauthorized third parties. Therefore, even a file sent to the wrong recipient may be subject to a reporting requirement if the incident poses a risk to the rights and freedoms of data subjects.

The risks are not limited to fines. Damage to reputation and loss of trust often carry greater weight.

Where do things go wrong in practice?

In many organizations, file transfer is not a dedicated service. Employees typically use standard email or generic cloud solutions without specific measures in place to ensure secure file transfer.

In practice, the following risks often come into play:

• Sending to the wrong email address;
• Download links where recipient verification is not enabled by default or cannot be enforced;
• Files that remain available indefinitely;
• Storing files in cloud environments where jurisdiction, data transfers, or contractual safeguards are insufficiently established;
• Lack of logging or post-event review.

The problem often lies not in bad intentions, but in a lack of structure and oversight. In many cases, security measures are available but are not implemented in a consistent or enforceable manner within the organization.

Technical measures that reduce risk

To reduce the risk of data breaches during file transfers, technical measures must be a standard part of the process. Encryption is crucial in this regard, but it is not enough.

Access control is just as important. Only authorized or verified recipients should be granted access to the file. In addition, the sender must be able to determine how long a file remains available and whether downloading is permitted.

Logging also plays a role. Logging makes it possible to see, after the fact, who had access and when. This aids in incident investigations and strengthens the ability to demonstrate that security measures have been implemented.

In our guide, " What is a secure way to send large files?", you can read about the technical requirements involved.

Organizational measures are just as important

Technology alone is not enough to prevent data breaches. Organizations must establish clear guidelines on how files are shared.

Consider policies regarding the transmission of personal data, regular reviews of the tools used, and employee training. Whenever secure transmission depends on individual choices, the risk remains.

Compliance is therefore not purely an IT issue, but an organization-wide responsibility.

You can read more about the legal aspects of this in the article " When Are You at Risk of an GDPR Fine for Email Use?"

From reactive to structurally safe

Many organizations only take action after an incident occurs. For many organizations, a report to the Dutch Data Protection Authority or a customer complaint is the point at which they review their processes.

A more effective approach is to systematically implement secure file transfers. This means that security is built into the process by default, without requiring employees to make security decisions themselves.

When secure transmission becomes part of the standard email process, you significantly reduce the risk of human error.

How organizations can address this in a secure and transparent manner

Organizations looking to reduce the risk of data breaches during file transfers often use a specialized solution that integrates with their existing work environment.

With FileCap, you can add an extra layer of security to Outlook or Microsoft 365. Files are sent encrypted, recipients are verified, and you decide how long a file remains available. In addition, data is stored within the EU with a European cloud provider.

That means:

• Encrypted file transfer;
• Verification of recipients before access is granted;
• Customizable availability duration and access control;
• Logging and verifiable monitoring for compliance.

This way, secure file transfer becomes not just a one-off task, but a standard part of the workflow.

You can read more about how this works on our page about securely sending large files.

Conclusion

Data breaches during file transfers are often caused by a lack of oversight, not by complex cyberattacks. In practice, unsecured transmission, incorrect addressing, and poorly managed access pose significant risks.

By combining encryption, access controls, and clear organizational policies, you can significantly reduce this risk. Organizations that handle personal data or confidential documents would be wise to implement secure file transfer procedures as a standard practice.

With FileCap, you can make secure file transfers part of your daily workflow, without requiring employees to manage security settings themselves.

Want to know how your organization can reduce the risk of data breaches during file transfers?
Request a demo or try FileCap free for 30 days.

Frequently Asked Questions

What is a data breach during file transfer?

A data breach during file transfer occurs when personal data becomes accessible to unauthorized parties. This can happen, for example, due to incorrect addressing or insufficient controls over who has access to a file. Under the GDPR, this may be subject to a reporting requirement.

How can you prevent data breaches in email communications?

You can reduce the risk of data breaches in email communications by using encryption, verifying recipients, and controlling how long files remain available. In addition, clear internal policies and logging are important for maintaining control.

Is encryption enough to prevent data breaches?

Encryption is important, but it’s not enough. Without access controls and the ability to manage who can open or download files, the risk remains.

Secure file transfer requires a combination of technical and organizational measures. Solutions such as FileCap combine encryption with recipient verification, configurable file retention periods, and logging within the existing email environment.

‍