Cryptocurrencies represent massive steps in social, economic, and technological advancements for all of us. One of their fundamental values ​​is freedom, since they allow transactions without borders and without the need for intermediaries. This has led to a debate between freedom and security in the use of cryptocurrencies, as they have also been used for illicit purposes ¹ ². *Advantages of cryptocurrencies* - _Financial freedom_: Cryptocurrencies offer the possibility of achieving greater financial freedom and reducing the costs of daily operations through decentralization. - _Wealth diversification_: Cryptocurrencies can be a way to diversify wealth and face growing inflation. - _Borderless transactions_: Cryptocurrencies allow transactions without borders and without the need for intermediaries. *Challenges of cryptocurrencies* - _Security_: Cryptocurrencies have also been used for illicit purposes, which has led to a debate between freedom and security in their use. - _Regulation_: The regulation of cryptocurrencies is an important issue, since it is necessary to find a balance between freedom and security in their use. - _Volatility_: Cryptocurrencies can be volatile, which can be a challenge for investors.