The npm package 'thirdwebb' is a malicious typosquat of the legitimate 'thirdweb' package. It is part of a coordinated DeFi-themed infostealer campaign that uses a side-loader technique to pull in the 'log-taker' dependency. This dependency runs a postinstall hook that harvests sensitive data including cryptocurrency wallet vaults, browser cookies, credentials, SSH keys, AWS credentials, .npmrc tokens, Docker config, shell history, and password manager databases, exfiltrating them to a command-and-control domain.