A major NPM developer, qix, has had their account compromised. It was used to push malware that targets and searches for bitcoin and cryptocurrency wallets on users devices. If detected, the malware would patch the code functions used to coordinate transaction signing, and replace the address a user is trying to send money to with one of the malware creator’s own addresses.
This should mostly be a concern for web wallet users, so in the Bitcoin ecosystem Ordinals or Runes/other token users, as unless an update for your normal software wallet happened to be pushed just earlier today with the compromised dependency, or if your wallet dynamically loads code directly from the wallet back end bypassing the app-store, you should be fine.
NPM is a package manager for Node.js, a popular Javascript framework. This means it is used to grab large sets of pre-written code used for common functionality to be integrated into different programs without the developer having to rewrite basic functions themselves.
The targeted packages were not cryptocurrency specific, but packages used by countless numbers of normal applications built with Node.js, not just cryptocurrency wallets.
If you are using a hardware wallet in combination with your web wallet, take extra care to verify on the device itself that the destination address you are sending too is correct before signing anything.
If you are using software keys in the web wallet itself, it would be advisable to not open them or transact until you are certain you are not running a vulnerable version of the wallet. The safest course of action would be waiting for an announcement from the team developing the wallet you use.