What is cryptocurrency security?

Cryptocurrency security refers to the measures and practices taken to protect digital currencies from various threats, including hacking, theft, fraud, and manipulation. Given the decentralized and often unregulated nature of cryptocurrencies, security is a crucial aspect for both investors and users. Can you elaborate on the key aspects of cryptocurrency security? How can individuals and organizations ensure their cryptocurrencies are adequately protected? What are some common security threats faced by the crypto world, and how can they be mitigated?