Phantom Wallet is a safe browser wallet whose code is independently audited by Kudelski Security (a top software auditing firm). Furthermore, as a self-custodial wallet, Phantom offers encrypted private keys that are stored on your device thus giving you full control.Phantom is a digital wallet reimagined for DeFi, making it safe and easy to store, send, receive, collect, and swap tokens on the Solana blockchain. Category. Wallet.