Harpie
The first on-chain firewall that prevents hacks, scams, and theft.
| Date | Investors | Amount | Round |
|---|---|---|---|
| investor | €0.0 | round | |
| investor | €0.0 | round | |
* | $4.5m | Seed | |
| Total Funding | 000k | ||
| USD | 2022 | 2023 |
|---|---|---|
| Revenues | 0000 | 0000 |
| EBITDA | 0000 | 0000 |
| Profit | 0000 | 0000 |
| EV | 0000 | 0000 |
| EV / revenue | 00.0x | 00.0x |
| EV / EBITDA | 00.0x | 00.0x |
| R&D budget | 0000 | 0000 |
Source: Dealroom estimates
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Harpie was a security firm operating in the Web3 space, offering an on-chain firewall to protect crypto investors from theft. The company announced on March 27, 2025, that it was ceasing all operations due to challenges in establishing a sustainable business model.
The company was founded in March 2021 by brothers Daniel and Noah Chong. Daniel Chong, the CEO, began his journey in the crypto world at age 12, trading Bitcoin for items in online games. His personal experiences with losing access to a significant amount of Bitcoin and being a victim of hacks fueled his determination to address the security vulnerabilities in the crypto space. While pursuing a mathematics degree at Duke University, Daniel deepened his expertise in blockchain technology, eventually leaving to focus on Harpie full-time after securing initial funding. The project that evolved into Harpie won the hackathon at ETHDenver in 2022.
Harpie's core product was an on-chain security solution that monitored transactions in real-time to detect and block malicious activity before it could execute. This service functioned as a firewall for crypto wallets, aiming to prevent theft from scams and hacks. For a fee, users could connect their wallets to Harpie's platform, which would then scan pending transactions for threats. If a user's wallet was compromised, the service was designed to help transfer funds to a new, secure wallet. The business model initially involved charging a percentage-based fee on recovered assets, later shifting to a fixed fee. The company provided its services to individual crypto users, particularly those active in the NFT space.
Harpie secured a $500,000 pre-seed round in November 2021, followed by a larger $4.5 million seed round in September 2022. The firm was backed by prominent names in the Web3 industry, including Dragonfly Capital, Coinbase Ventures, and OpenSea. Despite this support and its technology, Harpie could not find a viable path to long-term sustainability in the competitive Web3 security market and ultimately shut down its services.
Keywords: crypto security, wallet protection, on-chain firewall, blockchain security, crypto theft prevention, Daniel Chong, Noah Chong, Coinbase Ventures, Dragonfly Capital, OpenSea, ETHDenver, anti-fraud, crypto asset recovery, Web3 security, NFT security, digital asset protection, malicious transaction detection, crypto scams, ethereum security, smart contract security