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That was an interesting puzzle, Antonio Viggiano! Thanks for the ~1 ETH. The solution isn’t always in the spotlight. Your Sea Otter 🦦

Proud to be representing Shield3 on the Security Council and keeping Scroll safe!

Another Multisig hacked, this time for 1.4bn. If you are signer for a multisig, it's NOT enough to just use a hardware wallet. You need state of the art OpSec, along with a dedicated secure device for signing.

Security Alliance Bybit Ben Zhou Shout out to sudo rm -rf --no-preserve-root / as always for keeping SEAL911 going. Including seal in releases like this helps raise awareness in the space and with donors (who donate so that all of the Security Alliance initiatives can keep going!)

So DPRK could have targeted any safe wallet with a compromised safe server They choose max extraction with bybit’s wallet Probably Safe.eth needs a standalone binary app to run as ui alternative and redundancy Also additional apis Whole new ball game and attack vector

Collaborated with Will Papper ✺ a few years back on an L2 queue for multisig transactions github.com/WillPapper/mul… - might be time to bring it back

Over the last few days, I have had the pleasure to directly engage with some of the best security folks in the industry for advice Giving a shout out to Mudit Gupta sudo rm -rf --no-preserve-root / samczsun AndrewMohawk⁽ⁿᵘˡˡ⁾ Security Alliance 👆Folks should follow 👆

Alright folks, a new nice update was just shipped to the safe-tx-hashes-util script. Some security councils use so-called nested Safes as signers (i.e. use a Safe as a signatory to another Safe). When a nested Safe needs to approve a transaction on the primary Safe, it must call

deployed howtomultisig.com which is hopefully useful for some people who are interacting with multisigs. covering Threat Profiles, Transaction Verification, Setup & Config, Signer Security & Ops, Monitoring, Emergency Preparedness, and has report sharing and printing.

DSS Webinar on OpSec is LIVE! with • Peter Kacherginsky from Blockchain Threat Intelligence, and • pablito.eth 🦇🔊 ♢ & souilos from opsek Moderated by Isaac Patka (from Shield3 and Security Alliance) Watch now 🔽

If you know me please trust me on Circles app.metri.xyz/p/0x1BEd47Bdcb… x.com/aboutcircles/s…

This blog is the blockchain team's biggest and most alpha-packed to date. It has tons of guidance for any blockchain org that has to deal with multi-sigs or operational security. I highly recommend reading it, especially if you plan on heavily using custodial stablecoins.