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Phantom Wallet

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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.

Connected Entities

11 entities · 1 linked investigation
Individuals
○Francesco Agosti○Brandon Millman○Chris Kalani○Garry Tan
Organizations
□Paradigm□Phantom Technologies□Solana Foundation□Phantom Wallet□0x Protocol□Sequoia Capital□Andreessen Horowitz
Relationships
  • + 20 more
Also appears in
FTX·0

Connected Through

1 shared actor · 1 investigation

Distinct actors this investigation shares with others — holders, traders, and named parties. Shared infrastructure (exchanges, pools) is excluded.

  • □Sequoia Capitalorganization
    also inFTX·0
Have evidence about Phantom Wallet?

Timeline(17 events)

2021

Phantom Technologies, Inc. founded by Brandon Millman, Francesco Agosti, and Chris Kalani, all former 0x Protocol engineers

TechCrunch

14 July 2021

Phantom raises $9 million Series A led by a16z, with Variant Fund, Jump Capital, DeFi Alliance, Solana Foundation, and Garry Tan participating

TechCrunch

September 2021

Halborn privately discloses the 'Demonic' vulnerability affecting Phantom's browser extension, in which browsers cache seed phrases in plaintext

Halborn

November 2021

Phantom browser extension reaches 1 million downloads

The Block

2022

Phantom begins rolling out patches for the Demonic vulnerability; all users protected by April 2022

Phantom blog

31 January 2022

Phantom raises $109 million Series B led by Paradigm at a $1.2 billion valuation; launches iOS mobile app

CoinDesk

April 2022

Phantom launches Android mobile app

The Block

3 August 2022

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

CoinDesk

June 2024

Fake Phantom wallet application appears in Apple iOS App Store, harvesting seed phrases from users who attempt to import wallets

crypto.news

7 June 2024

Least Authority publishes independent security audit of Phantom Wallet; findings include two non-critical deficiencies later resolved by the Phantom team

Least Authority

2 December 2024

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 News

16 January 2025

Phantom raises $150 million Series C co-led by Sequoia Capital and Paradigm at a $3 billion valuation

Phantom blog / The Block

20 January 2025

Alleged hack of plaintiff Liam Murphy's wallets via Phantom browser extension; $500,000 in WIENER tokens liquidated, causing alleged 99% token value collapse

Decrypt

14 April 2025

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

Decrypt

17 June 2025

Phantom Technologies submits letter to SEC Crypto Task Force arguing wallet does not constitute broker activity and does not require Exchange Act registration

SEC.gov

17 March 2026

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 / CoinDesk

7 April 2026

Phantom experiences temporary service outage causing incorrect balance and price display; company states user funds unaffected; service restored same day

The Block
Provenance & Audit Trail
Anchored on SolanaVerify on-chain30 Wayback Archives

Decision Log

This investigation is cryptographically anchored to the Solana blockchain (9 events). 30 of 30 cited source URLs have an Internet Archive snapshot.

full audit log →version history →

model: claude-code-investigator

generated: 4/20/2026, 5:55:06 AM

last updated: 7/24/2026, 3:56:29 PM

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