A Comparative Analysis of Machine Learning Models For Predicting Indian Tech Stock Prices

Abstract

Blockchain technology has emerged as one of the most revolutionary innovations in the digital age, offering decentralized, transparent, and immutable solutions to a wide range of industries.However, the growing adoption of blockchain systems, from cryptocurrencies to enterprise applications, has brought to the forefront concerns surrounding security.While blockchain is inherently designed to be secure, it is not immune to vulnerabilities, and several risks persist that could undermine its effectiveness.This paper delves into the fundamental security aspects of blockchain technology, beginning with its core principles of decentralization, immutability, and cryptographic integrity.These features are key to the system's resilience, but their effectiveness in the face of sophisticated attacks is contingent upon the proper implementation of security protocols.We explore the most common security challenges facing blockchain networks today, including 51% attacks, smart contract vulnerabilities, Sybil attacks, and doublespending.Each of these issues poses significant risks to blockchain's trustworthiness, scalability, and operational efficiency.Notably, smart contracts, while heralded for their autonomy and trustless execution, have also shown to be prone to coding errors and exploits, which have led to major financial losses.In addition, vulnerabilities tied to cryptographic key management and the consensus algorithms that underpin blockchain, such as Proof of Work (PoW) and Proof of Stake (PoS), are examined in detail.