Decentralized identity verification, like Civic, reduces SIM hijacking risks compared to centralized systems. By leveraging blockchain, Civic stores identity data off-chain with cryptographic hashes on-chain, ensuring no single point of failure. SIM hijacking, where attackers swap a victim's SIM to intercept SMS-based authentication, is mitigated as Civic uses biometric verification (e.g., liveness checks) and non-transferable tokens like Civic Pass, bypassing reliance on phone numbers. However, risks persist if users' devices are compromised or private keys are exposed. Regular re-verification and secure wallet management are critical. While Civic enhances privacy and security, users must adopt strong device security practices to fully mitigate SIM hijacking threats in Web3 environments.