I'm curious, what methods should be employed to ensure the security of user data in a developed project? For example, which encryption standards should be preferred, or how should user data be stored? In your opinion, which steps would be the most important starting point?
How is user privacy protected in developed projects?
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For the projects we develop at MadridTech, we always start with a solid foundation. First and foremost, end-to-end encryption is key: TLS 1.3 for data in transit and AES-256 (no compromises) for data at rest. We avoid storing anything in plaintext, even temporarily—a GitHub repo with secrets in plaintext is an immediate red flag.
For storage, we prefer databases with native encryption like PostgreSQL with pgcrypto or MongoDB in encrypted mode. And above all, we enforce the principle of least privilege: strict access control at both the application and database levels. I’ve learned the hard way that a single unprotected admin password in a file can ruin months of work.