This video serves as a short introduction to the concept of frontrunning as it applies to cryptocurrencies and smart contracts in modern blockchain systems such as Ethereum or Bitcoin. We show what frontrunning is, how it happens in blockchain systems today, and provide some examples of applications that may have issues with frontrunning.

Some additional places where frontrunning can be an issue in smart contract applications:
* Decentralized Exchanges
* Domain Registration (e.g. ENS)
* ICO participation
* Fraud Proofs
* On-chain Bug Bounties
* Any system where simultaneous actions are allowed and broadcasting an action leaks information about that action

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