# Thinking About Smart Contract Security

DevFeed: [Thinking About Smart Contract Security](<https://devfeed.tech/articles/thinking-about-smart-contract-security-16765.md>)

Original publisher: [Read original article](<https://blog.ethereum.org/en/2016/06/19/thinking-smart-contract-security>)

Author: Vitalik Buterin

Published: 2016-06-19T01:30:06Z

Content type: article

Language: en

Sources: [Ethereum Foundation Blog](<https://devfeed.tech/sources/ethereum-foundation-blog.md>)

Topics: [Ethereum](<https://devfeed.tech/topics/ethereum.md>), [Security](<https://devfeed.tech/topics/security.md>)

Tags: [bugs](<https://devfeed.tech/tags/bugs.md>), [ethereum](<https://devfeed.tech/tags/ethereum.md>), [security](<https://devfeed.tech/tags/security.md>), [smart-contract](<https://devfeed.tech/tags/smart-contract.md>)

## AI overview

The article discusses a community-crowdsourced list of major smart contract bugs on Ethereum, including vulnerabilities and failures that led to theft, loss, or locked funds. It argues that these incidents reflect differences between implementation and intent, and notes the complexity of expressing intent.

## Source excerpt

Over the last day with the community's help we have crowdsourced a list of all of the major bugs with smart contracts on Ethereum so far, including both the DAO as well as various smaller 100-10000 ETH thefts and losses in games and token contracts. This list (original source here)...