Privacy is essential in crypto because blockchains reveal more information than most users realize. Tools like ring signatures, stealth addresses, zero-knowledge proofs, and privacy coins help protect people from tracking, profiling, and scams. Regulators scrutinize these tools because they can be misused, but supporters argue that privacy is a core financial right that protects everyday users, not criminals. As technology evolves, crypto will likely find better ways to balance privacy with compliance. Understanding these tools helps users stay safe in a transparent world.