SegWit (Segregated Witness) is a Bitcoin protocol upgrade that moves signature data out of the main transaction data, increasing block efficiency and fixing transaction malleability.
Overview
SegWit (Segregated Witness) is a Bitcoin protocol upgrade that moves signature data out of the main transaction data, increasing block efficiency and fixing transaction malleability. It enables scalable, cheaper on-chain transactions and supports Layer 2 solutions like the Lightning Network, strengthening transaction integrity and enabling safer off-chain constructs. In cybersecurity terms, SegWit reduces malleability-based attack vectors and improves reliability for security-focused custody and transaction verification workflows.
Related Threat Clusters
-
Bitcoin Security Enhancements Address Rising Cyber Threats in 2025
In 2025, the cryptocurrency landscape faces increasing cyber threats, prompting updates to Bitcoin's security infrastructure. Traders are particularly affected by risks such as phishing schemes and smart contract…
2 articles · Updated December 13, 2025
Recent Intelligence Reports
- Recent Bitcoin Security Updates Improving Cryptocurrency Protection | 01 — Vocal.Media · December 13, 2025