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Nick Percoco
Kraken
28.5K posts
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Nick Percoco
Kraken
@c7five
Chief Security Officer at @krakenfx, hacker, @THOTCON OPER, @IamTheCavalry, @DEFCON NOC, @SpiderLabs founder - Opinions are my own, not my employer’s
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grokipedia.com/page/Nicholas_…
Joined April 2009
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  • Pinned
    user avatar
    Nick Percoco
    Kraken
    @c7five
    Aug 2
    Article cover image
    Article
    The Coldcard entropy failure should be a wake-up call for the entire hardware wallet industry.
    For five and a half years, certain firmware versions generated seeds with far less entropy than intended. Roughly 40 bits on Mk2 and Mk3, and about 72 bits on Mk4, Mk5 and Q, against an intended...
  • user avatar
    Nick Percoco
    Kraken
    @c7five
    14h
    Scammers are calling our clients pretending to be Kraken Support, or reps from other crypto firms. The script rarely changes. They tell you there's a security issue with your account and you need to move your funds somewhere safe now. We built something for that moment. Kraken
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    New security features: how to verify a call is really from Kraken Support
    From blog.kraken.com
  • user avatar
    Nick Percoco
    Kraken
    @c7five
    Aug 3
    Whenever there is a major security issue in the crypto industry, scammers and criminals are going to prey on victims and bystanders. There is certainly going to be an uptick in phishing emails, scam calls, and people who “offer to help recover funds”. Stay vigilant and safe!
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  • user avatar
    Nick Percoco
    Kraken
    @c7five
    Aug 3
    If this is true, being dismissive towards researchers, may have led to the Coldcard losses their customers are experiencing. I actually hope this isn’t true.
    user avatar
    Student Of Things
    @studentofthings
    Aug 2
    Just confirmed, I found the Coldcard RNG bug 11 months ago and never reported it because they didn’t acknowledge me on the first one I reported.
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  • user avatar
    Nick Percoco
    Kraken
    @c7five
    Aug 3
    Correction: I lost count. This year would have been my 27th year of attending.
    user avatar
    Nick Percoco
    Kraken
    @c7five
    Aug 2
    For the first time in 25 years, I won’t be at @defcon. A unique combination of work and personal conflicts collided in the same week. I’m going to miss seeing friends and colleagues - and the shenanigans that go with that. I’ll be back next year for sure, if it isn’t canceled.
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