Phantom Wallet
Summary
Phantom Wallet is a self-custody, non-custodial cryptocurrency wallet developed by Phantom Technologies, Inc., headquartered in San Francisco. Originally launched in 2021 as a Solana-focused browser extension, it has expanded to support Ethereum, Bitcoin, Polygon, Base, and Sui across browser extensions and mobile apps, with approximately 15 million monthly active users and $25 billion in self-custodied assets as of early 2025. The company is well-funded and has engaged constructively with US regulators, though it faces an active civil lawsuit alleging a browser-extension security flaw, and its users have been materially targeted by phishing impersonators and fake app-store clones.
Timeline(17 events)
2021-01-01
Phantom Technologies, Inc. founded by Brandon Millman, Francesco Agosti, and Chris Kalani, all former 0x Protocol engineers
TechCrunch2021-07-14
Phantom raises $9 million Series A led by a16z, with Variant Fund, Jump Capital, DeFi Alliance, Solana Foundation, and Garry Tan participating
TechCrunch2021-09-01
Halborn privately discloses the 'Demonic' vulnerability affecting Phantom's browser extension, in which browsers cache seed phrases in plaintext
Halborn2022-01-01
Phantom begins rolling out patches for the Demonic vulnerability; all users protected by April 2022
Phantom blog2022-01-31
Phantom raises $109 million Series B led by Paradigm at a $1.2 billion valuation; launches iOS mobile app
CoinDesk2022-08-03
Approximately 8,000 Solana-ecosystem wallets drained in exploit later attributed to Slope Wallet's insecure key logging; Phantom wallets not directly compromised but some affected users had previously imported seed phrases from Slope
CoinDesk2024-06-01
Fake Phantom wallet application appears in Apple iOS App Store, harvesting seed phrases from users who attempt to import wallets
crypto.news2024-06-07
Least Authority publishes independent security audit of Phantom Wallet; findings include two non-critical deficiencies later resolved by the Phantom team
Least Authority2024-12-02
Solana web3.js npm library supply chain attack discovered; Phantom confirms it does not use the compromised library versions and is unaffected
Mitrade / The Hacker News2025-01-16
Phantom raises $150 million Series C co-led by Sequoia Capital and Paradigm at a $3 billion valuation
Phantom blog / The Block2025-01-20
Alleged hack of plaintiff Liam Murphy's wallets via Phantom browser extension; $500,000 in WIENER tokens liquidated, causing alleged 99% token value collapse
Decrypt2025-04-14
Thomas Liam Murphy and 13 co-plaintiffs file $3.1M lawsuit against Phantom Technologies and OKX in SDNY, alleging unencrypted private key storage and Commodity Exchange Act violations
Decrypt2025-06-17
Phantom Technologies submits letter to SEC Crypto Task Force arguing wallet does not constitute broker activity and does not require Exchange Act registration
SEC.gov2026-03-17
CFTC Division of Enforcement issues Staff Letter 26-09 — a no-action position — to Phantom Technologies, permitting wallet integration with regulated derivatives platforms without introducing broker registration, subject to ten conditions
CFTC.gov / CoinDesk2026-04-07
Phantom experiences temporary service outage causing incorrect balance and price display; company states user funds unaffected; service restored same day
The BlockDecision Log
- hash: GhddYFK5NE8FUeMHiVp1HLeJx3PAsrbwq7F2YRsYkpUx
- hash: 4tnfumtFPA3cUoo7wtRynSSmybrZomHdtkeFyez9FFaQ
- hash: ELUE9SbUiZfpXNpekWfiHKsXEFV8v1WMvmVm753SRWDM
- hash: AYou1mvo9BEgfHg67w3xi1kwTqNfvkdgzk3ksKo4NCnb
This investigation is cryptographically anchored to the Solana blockchain and source URLs are archived via the Internet Archive.
model: claude-code-investigator
generated: 4/20/2026, 5:55:06 AM
last updated: 5/14/2026, 3:35:44 AM
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