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hugohanoi's profile
Hugo Nguyen
Hugo Nguyen
Hugo Nguyen
@hugohanoi

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Hugo Nguyen

@hugohanoi

I chain, therefore I am ⛓️

Joined April 2012

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    1. Tuur Demeester‏ @TuurDemeester Apr 4

      “Proof-of-Stake, Private Keys Attacks and Unforgeable Costliness the Unsung Hero” — @hugohanoi https://medium.com/@hugonguyen/proof-of-stake-private-keys-attacks-and-unforgeable-costliness-the-unsung-hero-5caca70b01cb#---0-560 …pic.twitter.com/yHn0WbtVOC

      “Casper introduces the problematic concept of ‘inactivity leak’, where nodes get penalized for the mere crime of going offline. Whether you’re intentionally going offline to cause harm or not, it doesn’t matter. This is a super perverse rule because a) it introduces a new vulnerability where an attacker can DDOS…” from “Proof-of-Stake, Private Keys Attacks and Unforgeable Costliness the Unsung Hero” by Hugo Nguyen.
      16 replies 54 retweets 188 likes
      Show this thread
    2. Vitalik Non-giver of Ether‏Verified account @VitalikButerin Apr 4
      Replying to @TuurDemeester @hugohanoi

      PoW also has an inactivity leak. What else is mining hardware depreciation?

      17 replies 20 retweets 147 likes
    3. Hugo Nguyen‏ @hugohanoi Apr 5
      Replying to @VitalikButerin @TuurDemeester

      This analogy is so bad I don’t even know where to begin… Using “depreciation” to describe the opportunity cost of not staying online is not only confusing, but outright wrong.

      2 replies 1 retweet 17 likes
    4. Vitalik Non-giver of Ether‏Verified account @VitalikButerin Apr 5
      Replying to @hugohanoi @TuurDemeester

      I don't mean opportunity cost. I mean very real hardware depreciation arising from wear and tear and Moore's law.

      2 replies 3 retweets 10 likes
    5. Vitalik Non-giver of Ether‏Verified account @VitalikButerin Apr 5
      Replying to @VitalikButerin @hugohanoi @TuurDemeester

      This absolutely is a "leak" mechanism that approaches 100% over ~2 years.

      10 replies 4 retweets 13 likes
      Hugo Nguyen‏ @hugohanoi Apr 5
      Replying to @VitalikButerin @TuurDemeester

      a/ Moore’s law is breaking down and will break down even more when we reach practical limits of computation b/ how does this justify your rule of indiscriminately punishing nodes for going offline, which is the topic of discussion here?

      8:12 AM - 5 Apr 2018
      • 1 Retweet
      • 11 Likes
      • hassan code BitNovosti.com⚡️ Jamie Asefa Mike Leabo ⚡️ Smil Pent CoinAxis Cerberus Erik Hugo Nguyen
      1 reply 1 retweet 11 likes
        1. Andrew‏ @cyber_hokie Jun 30
          Replying to @hugohanoi @VitalikButerin @TuurDemeester

          Old thread, I know. But, would also the inability to secure some rewards by a mining node being offline effectively cause a leak scenario because they would have to cover additional costs (e.g. electricity) absent a source of income? Negative return event?

          0 replies 0 retweets 0 likes
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