Pocket Universe
Acquired1 known investors
Pocket Universe develops security tools that protect Web3 and crypto users from breaches and threats. The product is aimed at both individual users and enterprises.
Also known as PocketUniverseZ Β· Refract
Founders & leadership
Investors Β· 1
Company profile
researched Aug 2026Pocket Universe develops a browser extension that acts as a security layer for Web3 and crypto users. The extension inserts itself ahead of the wallet signing flow, simulating each transaction and showing the user which assets would move, so that malicious signatures can be identified before they are approved. Warnings cover common attack patterns such as fake NFT listings that drain collections traded on marketplaces like OpenSea and Blur, fake DEX orders that transfer ERC-20 tokens through trusted DEX protocols, and contracts that steal ETH while presenting themselves as airdrops, claims or mints. A rug-detection feature surfaces warnings about repeat rug-pullers on popular trading platforms.
The extension is installed in one click and requires no wallet connection, seed phrase or private key access; the user still signs in their own wallet. It is available for Chrome-family browsers and Firefox and is compatible with most Web3 wallets, including MetaMask, Coinbase Wallet, Rabby, XDEFI, Frame and Taho, while some wallets such as OKX and WalletConnect were not supported. Supported networks include Ethereum, Polygon, BSC, Optimism, Arbitrum, Base, Blast, Linea and Scroll, with additional chains added over time. An iOS version was in beta testing, with no full mobile release yet announced.
In addition to free warnings, Pocket Universe offers optional paid per-transaction coverage. The company's site advertises coverage of up to $30,000 per transaction for a small fee; earlier third-party and acquisition-related descriptions cite a $20,000 per-transaction coverage limit.
Business model
The core browser extension is offered free to end users, with revenue from an optional paid per-transaction coverage product that reimburses users up to a stated limit if a scam transaction slips through the extension's defenses.
Fee-based, opt-in per-transaction insurance/coverage attached to the otherwise free extension (up to $30,000 per transaction according to the company's site; $20,000 in other descriptions).
Traction
The company reports more than 200,000 users, over $1 billion in assets being protected, more than 3 million transactions analyzed per week, and over 200,000 protected wallets as cited at the time of acquisition. A third-party startup tracker recorded roughly 181,300 monthly website visits.
Latest developments
Kerberus Cyber Security announced the acquisition of Pocket Universe and Refract on August 21, 2025, planning to integrate Pocket Universe's pre-sign warnings into Sentinel3 as part of a broader "crypto antivirus" offering spanning EVM chains and Solana.
βΈFull profile β market position, technology, go-to-market, geography, history, risks & controversies
Market position
One of several consumer Web3 wallet-security extensions; acquirer Kerberus operates the competing Sentinel3 extension and had previously acquired Fire, while comparable transactions in the segment include MetaMask's purchase of Wallet Guard and Phantom's acquisition of Blowfish.
Combines free pre-signature transaction simulation and scam warnings with optional per-transaction monetary coverage, requires no wallet connection or key access, and works across a broad set of wallets and EVM chains.
Technology
Pre-signature transaction simulation that determines the actual effect of a transaction and displays asset movements, combined with phishing and wallet-drainer detection, malicious-contract and signature pattern recognition, and rug-pull/serial-scammer flagging surfaced inside trading platform interfaces. The extension operates at the browser level and intercepts the signing prompt without holding keys or wallet access, and runs across multiple EVM networks.
Go-to-market
Distribution through the Chrome Web Store and Firefox add-ons directory as a free, one-click install, amplified by word-of-mouth and user testimonials on Twitter/X and community channels such as Discord.
Retail Web3, DeFi and NFT users who sign on-chain transactions from browser wallets; the installed base is described as skewing DeFi-heavy.
Geography
Incorporated in Australia with a US presence in San Francisco.
History
Founded in 2022, Pocket Universe built a free anti-scam browser extension for Web3 users and raised approximately $350,000 from Zee Prime Capital, Alliance DAO and AirTree Ventures. The company appeared in Alliance DAO's ALL10 accelerator cohort, covered in press in May 2023. On August 21, 2025, Kerberus Cyber Security announced it had acquired Pocket Universe along with Refract, the team behind the product, on undisclosed terms reported to be in the seven figures; Kerberus said it would fold Pocket Universe's protections into its Sentinel3 product and extend coverage across EVM chains and Solana.
Risks & controversies
Coverage limits are stated inconsistently across sources ($30,000 per transaction on the company site versus $20,000 in acquisition and tracker descriptions). Wallet compatibility is incomplete, with wallets such as OKX and WalletConnect unsupported, and no full mobile release shipped beyond an iOS beta. Commentary accompanying the acquisition noted that standalone consumer security tools in crypto scale and monetize poorly unless embedded in wallets and payment rails.
Compiled by commissioned research from 8 cited public sources β announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed β not independently audited.
Timeline Β· 3
launches, deals, and filingsAn acquisition report states the company raised approximately $350,000 in total from Zee Prime Capital, Alliance DAO and AirTree Ventures; no individual round dates or terms were disclosed.
$350K source β
Kerberus Cyber Security announced the acquisition of Pocket Universe, along with Refract, the team behind the extension. Terms were undisclosed, with multiple reports characterizing the consideration as a seven-figure transaction. Kerberus said it would fold Pocket Universe into its Sentinel3 product and extend protections across EVM chains and Solana.
Pocket Universe appeared in press coverage of Alliance DAO's ALL10 web3 accelerator cohort.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
βΈResearch sources Β· 8
primary sources listed
- Pocket Universepocketuniverse.app Β· web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Pocket Universe do?
- Pocket Universe is a Web3 security browser extension that simulates and flags malicious crypto transactions before users sign them.
- Who founded Pocket Universe?
- Pocket Universe was founded by Danor Cohen, Alex Katz.
- Who are Pocket Universe's investors?
- Pocket Universe's investors include Alliance DAO (ex DeFi Alliance).