# Security Alert! > #thirdweb **Published by:** [moradi1990.eth](https://paragraph.com/@moradi1990.eth/) **Published on:** 2023-12-05 **URL:** https://paragraph.com/@moradi1990.eth/security-alert ## Content 🚨 Security Alert! On Nov 20th, 2023, #thirdweb discovered a vulnerability in a crucial open-source library in the #Web3 industry. This affects various smart contracts, including some pre-built by us. πŸ”’ No exploitation detected yet, but if you created contracts before Nov 22nd, 2023, at 7pm PT, take action now!πŸš€ πŸ›  Mitigation tool & guide are here to help: πŸ”— https://mitigate.thirdweb.com πŸ”— https://blog.thirdweb.com/security/contract-mitigation/ πŸŽ“ https://www.youtube.com/watch?v=kYy6uDmIQQA βœ…Contracts created after Nov 22nd, 7pm PST are safe! Spread the love with ❀ & πŸ” Stay safe ## Publication Information - [moradi1990.eth](https://paragraph.com/@moradi1990.eth/): Publication homepage - [All Posts](https://paragraph.com/@moradi1990.eth/): More posts from this publication - [RSS Feed](https://api.paragraph.com/blogs/rss/@moradi1990.eth): Subscribe to updates - [Twitter](https://twitter.com/0xM0OR): Follow on Twitter ## Optional - [Collect as NFT](https://paragraph.com/@moradi1990.eth/security-alert): Support the author by collecting this post - [View Collectors](https://paragraph.com/@moradi1990.eth/security-alert/collectors): See who has collected this post