Data privacy protects personal information from unauthorized access and misuse. It is about who can see your data, how long they keep it, and what they do with it. Privacy laws like GDPR and CCPA give individuals rights over their data: the right to know what is collected, the right to delete it, and the right to opt out of sale. Organizations that handle personal data must comply or face fines.

Privacy and security overlap but are not the same. Security protects data from attackers. Privacy protects people from legitimate organizations that collect too much. A company can have excellent security and still violate privacy by selling user data without consent. The reverse is also true. Privacy is a design choice. Collect only what you need. Store it for a defined period. Limit who can access it. Give users control over their information. These principles sound simple. Implementing them at scale is hard. Data spreads across systems, backups, and third-party vendors. Deletion requests must propagate everywhere. Most organizations are still catching up. Regulators are not waiting.

Privacy principles

• Data minimization — collect only what is necessary
• Purpose limitation — use data only for stated purposes
• Storage limitation — delete data when no longer needed
• User rights — access, correction, deletion, portability
• Consent — clear, informed, and revocable

Privacy is not about having something to hide. It is about controlling who knows what about you.