According to a post on bitcointalk.org by theymos a vulnerability in the code of the Electrum light wallet might potentially allow a hacker to steal bitcoins from the wallet.
An issue found in the code available on GitHub in version under 3.0.4 are potentially affected.
Course of action to repair the issue is as follows:
- If you are running Electrum, shut it down right this second.
- Upgrade to 3.0.4 (making sure to verify the PGP signature).
Anyone who had a no paraphrase set and had a website open is potentially affected and should also be slapped for not securing the wallet in the first place.
Regardless, it is recommended to update to Version 3.0.3 immediately to continue using Electrum with reduced risk.
If you don't use Electrum then don't worry about it unless you make the decision to use the software in which case, simply install the latest version which was fixed a few hours ago.
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