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levelk_io's profile
Level K
Level K
Level K
@levelk_io

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Level K

@levelk_io

Level K creates decentralized applications on Ethereum

levelk.io
Joined September 2017

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    Level K‏ @levelk_io 9 Nov 2018

    We will shortly disclose a security issue that could potentially cause exchanges a loss of funds. In order to receive advance notice prior to disclosure, please add your name to the following list via pull request, or by DM’ing @trailofbits or @levelk_io:https://github.com/trailofbits/blockchain-security-contacts …

    8:45 AM - 9 Nov 2018
    • 58 Retweets
    • 91 Likes
    • Rasmus-Agora สุชนัฏฐา MERCULET Dalen #YT lover 🚀 KRYPTO-LAND 🚀 Qing Ma #EOS Jeremy Bae Henry RedCoat13 Thomas
    10 replies 58 retweets 91 likes
      1. New conversation
      2. Level K‏ @levelk_io 9 Nov 2018

        This issue also affects other systems that transfer funds to users. If you think your system may be affected, please DM @trailofbits or @levelk_io

        2 replies 1 retweet 16 likes
        Show this thread
      3. Level K‏ @levelk_io 21 Nov 2018

        The disclosure is now public: https://medium.com/level-k/public-disclosure-malicious-gastoken-minting-236b2f8ace38 … We appreciate the patience while affected parties were notified.

        5 replies 40 retweets 69 likes
        Show this thread
      4. End of conversation
      1. New conversation
      2. Saint Nakamoto‏ @StNakamoto 9 Nov 2018
        Replying to @levelk_io @trailofbits

        Could you be a bit more specific what this affects? There are too many systems that transfer funds to users... Does this affect sending Ethereum transactions for example?

        1 reply 0 retweets 2 likes
      3. Dan Guido‏ @dguido 9 Nov 2018
        Replying to @StNakamoto @levelk_io @trailofbits

        We will disclose this to as many people and organizations we believe are affected early next week. We are only gathering contact information right now, and finishing our technical investigation of the flaw.

        2 replies 1 retweet 7 likes
      4. Saint Nakamoto‏ @StNakamoto 9 Nov 2018
        Replying to @dguido @levelk_io @trailofbits

        Is this methodology appropriate when considering a decentralised network? Given the vagueness of the issue so far, anyone may be affected, the extent of which will be unknown except to the individual. Will your approach give big known players an unfair advantage?

        1 reply 0 retweets 2 likes
      5. Dan Guido‏ @dguido 9 Nov 2018
        Replying to @StNakamoto @levelk_io @trailofbits

        It will give people who add themselves to our notification list an advantage, which we are loudly trying to advertise in advance of a quiet, embargo'd notification period and then later public release.

        1 reply 0 retweets 5 likes
      6. Saint Nakamoto‏ @StNakamoto 9 Nov 2018
        Replying to @dguido @levelk_io @trailofbits

        As a random individual, can I put my name on the list? If not, how do you plan to ensure that parties you are pre-disclosing to (including everyone associated with them) have the interest of their users and will not misuse their advantage?

        1 reply 0 retweets 4 likes
      7. Dan Guido‏ @dguido 9 Nov 2018
        Replying to @StNakamoto @levelk_io @trailofbits

        We are only notifying people who have an ability to patch their systems to mitigate the flaw. Everyone else will receive the details once the embargo period has expired.

        3 replies 0 retweets 6 likes
      8. Saint Nakamoto‏ @StNakamoto 9 Nov 2018
        Replying to @dguido @levelk_io @trailofbits

        Ability to patch = ability to exploit. No? Scenario: DEX common construct has exploit allows stealing user funds. You disclose exploit to exchange first, friend of owner exploits it to steal user funds before said user has awareness or able to personally mitigate.

        1 reply 0 retweets 4 likes
      9. Dan Guido‏ @dguido 9 Nov 2018
        Replying to @StNakamoto @levelk_io @trailofbits

        Thanks for your perspective, however, we see no better way to release this information than a staged process that attempts to maximize patching and minimize harm. You can choose a different process when you find the bug.

        1 reply 0 retweets 10 likes
      10. 2 more replies
      1. ฿itcoin‏ @CryptoChrisG 9 Nov 2018
        Replying to @levelk_io

        pic.twitter.com/er4QJffmEu

        0 replies 0 retweets 5 likes
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      1. Ethan Kravitz‏ @EthosVentures 9 Nov 2018
        Replying to @levelk_io @trailofbits

        Will you publish a list of exchanges that have been notified and agreed to patch?

        0 replies 0 retweets 3 likes
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      1. Hexagon_Chains‏ @00dy 9 Nov 2018
        Replying to @levelk_io @trailofbits

        If only we had 20+ years of experience on how to properly handle security disclosures. Welp, twitter it is for now!

        0 replies 0 retweets 4 likes
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      1. IBuyYourStops‏ @BuyStops 9 Nov 2018
        Replying to @levelk_io @trailofbits

        Oh FFS just steal the eth.pic.twitter.com/N5m9OwDCIo

        0 replies 0 retweets 2 likes
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      1. 🄾🄲🄶‏ @oldcryptogeek 7 Dec 2018
        Replying to @levelk_io @trailofbits

        https://forum.saturn.network/t/make-centralized-exchanges-mine-gastoken-for-you/2518 …

        0 replies 0 retweets 1 like
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      1. Adam Dossa‏ @AdamAID 11 Nov 2018
        Replying to @levelk_io @trailofbits

        If this does impact DEX's in a general way, then it may be prudent to suggest that everyone withdraws funds from DEX's before any disclosure. If there is any common way for people to mitigate the impact of the bug, this should be published ahead of any disclosure, to any parties.

        0 replies 0 retweets 1 like
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      1. Anton Bukov‏ @k06a 10 Nov 2018
        Replying to @levelk_io @trailofbits

        Is it about how custom exchanges software create signatures for transactions?

        0 replies 0 retweets 0 likes
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