Encryption means the process of converting information or data into a code to prevent unauthorized access, ensuring that client information is secure both in transit and at rest. This fundamental cybersecurity practice uses complex algorithms to scramble data, making it unreadable without the correct decryption key. Encryption is crucial for protecting sensitive information such as financial data, personal identifiable information (PII), and intellectual property. Key types include symmetric encryption (using a single key) and asymmetric encryption (using public and private keys). Effective encryption strategies involve selecting appropriate algorithms, managing keys securely, and implementing encryption across various layers of IT infrastructure. Regular audits and updates to encryption methods are essential to maintain protection against evolving cyber threats.