Cryptocurrencies are normally constructed utilizing blockchain innovation. Blockchain describes the way transactions are recorded into "blocks" and time-stepped. It's a genuinely perplexing, specialized cycle, however, the result is a digital ledger of cryptocurrency transactions that's hard for hackers to tamper with.
Likewise, exchanges require a two-factor confirmation measure. For example, you may be approached to enter a username and secret key to begin an exchange. Then, at that point, you may need to enter a verification code that is sent through text to your own PDA.