Encryption Alone Cannot Protect Your Data Once It Starts Moving

Most data protection strategies focus on securing the system: encrypting databases, locking down networks, restricting access and monitoring activity. The article argues these defences still matter, but they leave a blind spot. Once data is inside the wall, every time it is used, copied or moved, the risk of theft and exposure rises. Data travels through cloud platforms, vendors, backups, analytics tools, payment processors and AI pipelines, and each handoff creates another place where it can be copied, logged or mishandled.

The gap is that encryption protects stored data well, only partly protects data in transit, and does not protect data while it is being processed. Once an authorised system decrypts information so it can be used, it is readable again. The article also notes that stolen data could be decrypted later if quantum computers become readily available. In short, encryption is essential but not enough.

The author points to one approach: vaultless, keyless pseudonymization. The idea is to replace sensitive values with realistic substitutes before the data spreads. A name becomes another name, and a Social Security number becomes another valid-looking one. Card numbers, patient identifiers and addresses keep the same basic format, so billing platforms and analytics tools can still process the records. However, the real identity is no longer exposed to every vendor or platform that touches the data. This is an opinion piece aimed at policymakers, and this summary covers only the opening of the article.