According to several reports, there’s been an alleged Ledger Connectkit Library exploit and people are being warned not to interact with decentralized application (dapp) front ends. Reportedly, the library that maintained several dapps now contains a wallet drainer.

*Editor’s Note: The end of this article was updated at 9:02 a.m. (EST) on Dec. 14, 2023, with a message from Ledger noting that the malicious file in the library was replaced and will be propagated.

Ledger Library Breach: Experts Advise Halting Dapp Usage to Dodge Wallet Drainer

A myriad of reports detail that there’s an issue with the Ledger Library as an exploit was noticed. The X user called “Banteg” explained that, “[Ledger Library] confirmed compromised and replaced with a drainer” and stressed that people should “wait out interacting with any dapps till things become clearer.”

Blockchain developer Hudson Jameson detailed that Ledger’s Library, used in numerous dapps, has been compromised, leading to the insertion of a wallet drainer. Jameson advised people to refrain from interacting with dapp front ends on websites, as the situation remains risky, especially for those unaware of the specific backend libraries in use. He added that while visiting compromised websites won’t automatically result in fund loss, deceptive browser wallet prompts could enable unauthorized asset transfers to malicious entities.

Jameson further added that Ledger is aware of the issue and actively working on a resolution. Note that safety will only be restored after affected dapps update their use of Ledger’s Web3 libraries, even post-correction by Ledger. A large swathe of other developers and crypto enthusiasts shared warnings on the social media platform X.

“I would avoid using ANY dapps until their teams confirm that they have mitigated the attack,” one individual wrote. Revokecash, Zapper, Tapswap, Sushi, and other dapps are reportedly vulnerable to the bug, and users are being advised to avoid using these applications.

*Ledger has officially confirmed the issue. “We have identified and removed a malicious version of the Ledger Connect Kit. A genuine version is being pushed to replace the malicious file now,” Ledger wrote at 8:31 a.m. (EST). “Do not interact with any dapps for the moment. We will keep you informed as the situation evolves. Your Ledger device and Ledger Live were not compromised.

“The malicious version of the file was replaced with the genuine version at around 2:35 p.m. CET. The new genuine version should be propagated soon,” Ledger added in a subsequent tweet. “We will provide a comprehensive report as soon as it’s ready. In the meantime, we’d like to remind the community to always Clear Sign your transactions – remember that the addresses and the information presented on your Ledger screen is the only genuine information. If there’s a difference between the screen shown on your Ledger device and your computer/phone screen, stop that transaction immediately.”

This story is still developing and will be updated with more information as it transpires.

What do you think about the issue with the Ledger Library? Share your thoughts and opinions about this subject in the comments section below.