The importance of data loss prevention cannot be overstated, as a single breach can have severe consequences for a company's reputation and finances. Data breaches are categorized into three types: confidentiality breaches, integrity breaches, and availability breaches. To prevent data loss, it is essential to choose the right architecture, identify sensitive data, encrypt and hash data, utilize secret management tools, implement access limitations, and employ two-factor authentication. Companies can also mitigate the severity of a data leak by reducing the amount of data stored and implementing privacy by design. Several companies use data loss prevention software to block actions that may lead to data leaks, such as prohibiting users from performing actions via USB storage devices or an accidental malware download. By taking proactive measures, developers and companies can reduce the risk of data leaks and protect sensitive information.