Sending large files is a daily occurrence in many organizations. Contracts, medical records, financial reports, and technical documents are regularly shared with external parties. The risk usually lies not in the file size itself, but in how files are sent and who has access to them.
Anyone who works with confidential information must therefore consider more than just whether a file can be sent.
What does it mean to send large files securely?
A secure way to send large files means that the content is protected during transmission, that only authorized recipients have access, and that the sender can maintain control over availability and storage. Security in this context is not just about technology, but also about understanding and controlling access to information.
In other words: organizations want to be able to see who has accessed a file, how long it was available, and where it is stored.
Why standard email is often insufficient
Many organizations try to send large files via email. In many email environments, large attachments are automatically stored in a cloud environment, after which a download link is generated. The file is then stored outside the email itself, which means the sender has less direct insight into who has access to the file.
In addition, standard email is not specifically designed for sending sensitive personal data or confidential documents. Without additional security measures, there is often a lack of control over access, logging, and retention periods. This can pose risks under the GDPR, especially when it comes to special categories of personal data or confidential business information.
The difference between storage and secure transfer
Many cloud solutions are designed for file storage and sharing. That is not the same as securely transmitting information.
Storage is primarily focused on making files available to users. Secure transfer, on the other hand, focuses on the controlled transmission of information, protecting the content during transmission and ensuring control over who has access to the file.
This distinction is important for organizations that must comply with internal compliance requirements or external regulations.
A platform designed for storage or file sharing is therefore not automatically equipped to handle the secure transmission of confidential documents.
When are you actually at risk?
Risks usually do not arise from technology alone, but from a lack of control over how files are shared and managed. Consider, for example, situations in which download links remain active indefinitely, recipients are not verified, or files are stored outside the European Union without clarity regarding where the data is processed and under which laws.
Free file-sharing tools can also introduce additional risks. In some cases, it is unclear where data is stored, who has access to it, or how long files will remain available.
What criteria must secure file transfer meet?
Various security measures play a role in secure file transfer. In practice, this often involves a combination of the following elements:
- The contents of files are protected during transmission and when recipients access the file;
- Access to the file is restricted to verified recipients;
- The sender can manage access to the file and the retention period;
- Data is stored and processed in accordance with applicable privacy laws, such as the GDPR;
- Logging or monitoring is available to provide insight into file access after the fact.
If one or more of these elements are missing, the risk of unauthorized access to information may increase. This can also have consequences for organizations that must comply with privacy laws such as the GDPR.
How organizations can systematically implement secure data transfer
More and more organizations are choosing to set up secure file transfer as a separate solution, in addition to regular email or generic cloud storage. This involves using a specialized solution that integrates with existing work environments, such as Outlook or Microsoft 365.
This keeps things simple for employees, while additional security measures are applied in the background. These include, for example, protecting content during transmission, verifying recipients, and configurable retention periods.
On our page about securely sending large files, you can read about how organizations implement this in practice and what technical and organizational requirements are involved.
Conclusion
A secure way to send large files isn’t about file size, but about controlling access to and the availability of information. The difference lies not only in how a file is sent, but primarily in how access is managed and how long the information remains available.
For organizations that handle confidential information, it is therefore important to look beyond standard email or generic cloud storage. Measures such as controlled access, recipient verification, customizable retention periods, and visibility into usage help mitigate risks.
Organizations would be wise to critically assess their current practices. Structural security measures can reduce the risk of data breaches and help build trust among customers and partners.
Frequently Asked Questions
What is the safest way to send large files?
A secure way to send large files is through a solution that includes content protection, access control, and recipient verification. The sender must also be able to control access to the file and determine its retention period. Storing and processing data within the EU can help ensure compliance with privacy laws.
Is email secure enough for large files?
Standard email is often not designed for sending large, confidential files. Without additional measures, there is usually no control over storage, access, and logging. For sensitive information, it may therefore be wise to use a specialized file transfer solution.
When is a file transfer GDPR-compliant?
Data transfers can be GDPR-compliant when organizations implement appropriate technical and organizational measures to protect personal data. These measures may include, for example, protecting the content, restricting access to files, and monitoring usage. Organizations must assess the risks associated with processing and implement appropriate measures.
