Why standard email is insecure for confidential data
Standard email was never engineered for secure data transmission. When you attach a PDF containing CPR numbers, payroll spreadsheets, medical records, or sensitive corporate contracts to an email, that attachment travels across multiple relay servers in unencrypted plaintext.
A single misdirected keystroke in the recipient field can cause an irreversible data leak, exposing confidential personal information and mandating a formal notification to Datatilsynet (the Danish Data Protection Agency) within 72 hours under GDPR Article 33.
GDPR requirements for confidential file sharing
Under the General Data Protection Regulation (GDPR), organizations acting as data controllers are legally required to implement appropriate technical and organizational measures to ensure a level of security appropriate to the risk (Article 32).
Datatilsynet has repeatedly clarified that transmitting sensitive personal information or national identification numbers (such as Danish CPR numbers) over the public internet requires strong end-to-end encryption. Failing to implement adequate safeguards exposes businesses to severe regulatory reprimands and financial penalties.
How to share files securely with KvikSend
KvikSend eliminates the security vulnerabilities of email by replacing file attachments with encrypted, access-restricted download portals. When sending confidential documents, the sender uploads the files to an ISO 27001 certified European server protected by AES-256 encryption at rest.
Instead of receiving the raw file, the recipient receives a secure notification link. Before access is granted, the system authenticates the recipient through their verified MitID or a private one-time SMS passcode, ensuring only the intended recipient can view or download the files.
Audit trails and automatic file expiration
Every file transfer conducted through KvikSend produces a comprehensive cryptographic audit trail. Senders can monitor when the link was opened, the exact IP address of the downloader, and the exact verified MitID identity token.
To prevent sensitive files from lingering indefinitely on third-party devices, KvikSend supports automated lifecycle policies. Senders can configure links to expire automatically after 7, 14, or 30 days, or limit access to a single download, after which the files are permanently purged.