Blockchain, despite its revolutionary nature, is not immune to numerous vulnerabilities. One of the main threats is the *51% attack*, when miners or network nodes control the majority of computing power, allowing them to manipulate transactions. Solution: the use of consensus algorithms such as *Proof of Stake*, which reduce the influence of large players.
Another weak point is *smart contracts*, which may contain vulnerabilities due to coding errors. Software for auditing, such as MythX and OpenZeppelin, helps to identify these issues before they are exploited.
An important aspect remains *private key protection*, which can be stolen in case of unreliable storage. To prevent leaks, transitioning to hardware wallets and multi-factor authentication is essential.
Thus, to ensure the security of blockchain systems, it is important to apply advanced protection methods, regular audits, and network monitoring.
