Each Ethernaut level requires hacking a smart contract in the Ethereum Virtual Machine through a Web3 and Solidity wargame.
OpenZeppelin Defender vs 3F Mutual
How do OpenZeppelin Defender and 3F Mutual compare? Here are the facts side by side: pricing, platforms, open-source status and what each one is for.
| Directory detail | OpenZeppelin Defender | 3F Mutual |
|---|---|---|
| What it is | OpenZeppelin Defender is documented within the official OpenZeppelin library and tools documentation. | 3F Mutual offers insurance related to a MakerDAO emergency shutdown, according to its page. |
| Website | ||
| Type | Website | Website |
| Topic | ||
| Pricing | Not confirmed | Not confirmed |
| Platforms | Web | Web |
| Open source | Not stated | Not stated |
| Language | English | English |
| Alternatives |
Other options to consider
Sites similar to both OpenZeppelin Defender and 3F Mutual.
Nexus Mutual offers crypto cover for risks including hacks and describes itself as an alternative to insurance.
Tulipa Capital curates DeFi risk strategies and provides dashboards and partner information for its on-chain finance work.
Rekt publishes investigative journalism and commentary on crypto incidents, with a ranked archive of major blockchain losses.
OtterSec audits blockchain systems, including layer-one networks, wallets, DeFi protocols, bridges, and related infrastructure.
AlphaPing operates non-custodial on-chain credit vaults with defined risk constraints, verifiable accounting, and liquidity rules.







