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Summary of Blockchain Security - Nov 2026. The reason blockchain was architected as the layer of trust is the off chain private key. Thats the only bulletproof defense we have against large language models and Moores Law. If you break that design and commingle, centralize, custody, put private keys online, share keys, the architecture breaks. Blockchains will continue to increase the depth of the private key to always push the brute force attack probability way into the future if ever. When private keys are held online, we get the “hacks” and FUD waves. Custodial solutions need complex key management like MCP to be safe online from AI penetration and must have multi party signatures and multiple safeguards for large transactions requiring further depth of signature verification. Most attacks are however mostly social engineered attacks, these will always be a problem. Humans can be extorted and manipulated into providing their keys. Hence multi layer multi party rotating signatures are vital for large value. Coinbase do a terrific job at this btw 👏 But the blockchains have never been broken, never been hacked, summary, there are only two attack vectors that penetrate: - key theft - Ethereum EIP-7702 Externally Owned Accounts and reentrancy bugs. Im not a candy coater. Im a scientist. This is the state of the domain. Any violation of off chain keys is a vulnerability not to be taken lightly. I have urged all custodians to move away from EIP-7702 and reentrancy for years. I urge them again, move to MPC asap and stop using Externally Owned Accounts.

We are looking to heavily invest in the area of blockchain security. Trillions of dollars are moving onchain, while AI is changing the threat landscape faster than most infrastructure can keep up. Institutions won’t come at scale, and users won’t feel safe, until this is properly solved. If you’re a great founder building in this space, DM me. We’re serious about backing the best teams we can find. Any stage, any amount.

TRON is taking the next step toward long-term blockchain security. The Nile Testnet’s post-quantum signature upgrade brings NIST-standardized quantum-resistant signatures to public blockchain infrastructure. More details from @Crypto_Briefing 👇

LATEST: Bybit reports $17.3 BILLION in reserves across 50 assets, exceeding customer balances for all 50 assets covered in its 41st proof-of-reserves report. Blockchain security firm Hacken independently verified the recent data, Bybit said.

An attacker drained at least $6 million from a Crypto. com-linked digital-asset lending platform after borrowing over $74 million by manipulating the price of tokens used as collateral, according to a blockchain security firm

We're welcoming three new Tier 1 validators: @MoneyGram, @Figure, and @range_org. Expanding the set of Tier 1 organizations — which span capital markets, global money movement, and blockchain security infrastructure — further strengthens the network.

Yajin Zhou ( @yajinzhou ) is speaking at Money Frontier 2026. Yajin Zhou is an Associate Professor at CUHK @CUHKofficial and a co-founder of BlockSec @BlockSecTeam . His research focuses on building reliable and trustworthy systems, spanning operating systems, blockchain infrastructure, and AI agent systems. He is currently exploring how to redesign system infrastructure to enhance the efficiency and security of AI agents. He co-founded BlockSec, a company that provides blockchain security and compliance solutions. Join him at Money Frontier 2026. Get your tickets and learn more:

Lazarus is now linked to the biggest hack in crypto history🚨 The same group responsible for the $1.46 BILLION Bybit hack in February 2025 is now behind the $6.3 BILLION Binance exploit. I’m talking about North Korean Lazarus Group, specifically its TraderTraitor operation. Binance lost $6.3B across 10 different blockchains So how did this happen? the attackers allegedly compromised a DevOps engineer’s laptop, gaining access to an internal service environment that could be used to submit unauthorized withdrawals. One of the transactions contained 50 EIP-7702 authorizations, including a delegation affecting Binance’s hot wallet known as Binance 14. Wallet: 0x28c6c06298d514db089934071355e5743bf21d60 EIP-7702 allows an Ethereum account to delegate execution to smart contract code. $3 BILLION has reportedly been frozen through intervention by stablecoin issuers and blockchain security participants. (48% of the estimated total) But frozen doesn’t mean recovered. We will see, but the fight to recover the money is just beginning.

Happy weekend fam, Post-Quantum Cryptography could become one of the next major security narratives in crypto. NIST has already finalized its first PQC standards, while Ethereum, Bitcoin and several other ecosystems are exploring how to prepare for quantum threats. I think this narrative deserves more attention, especially as AI and quantum computing continue to advance. Here's why: – most major blockchains still rely on elliptic-curve signatures, which could become vulnerable to sufficiently powerful quantum computers. – Shor's algorithm could potentially break these signatures, putting exposed public keys and associated funds at risk. – NIST has standardized PQC algorithms such as ML-DSA, SLH-DSA and ML-KEM, giving the industry a clearer path toward migration. – upgrading blockchain security could create demand for new wallets, custody solutions, signature systems and migration infrastructure. Ofc, this threat isn't expected to materialize overnight. No publicly demonstrated quantum computer can currently break Bitcoin or Ethereum's production signatures at scale. But preparing major blockchain networks could take years. 20 tokens I'm tracking around the Post-Quantum narrative: Post-Quantum Cryptography could become one of the next major security narratives in crypto. NIST has already finalized its first PQC standards, while Ethereum, Bitcoin and several other ecosystems are exploring how to prepare for quantum threats. I think this narrative deserves more attention, especially as AI and quantum computing continue to advance. Here's why: – most major blockchains still rely on elliptic-curve signatures, which could become vulnerable to sufficiently powerful quantum computers. – Shor's algorithm could potentially break these signatures, putting exposed public keys and associated funds at risk. – NIST has standardized PQC algorithms such as ML-DSA, SLH-DSA and ML-KEM, giving the industry a clearer path toward migration. – upgrading blockchain security could create demand for new wallets, custody solutions, signature systems and migration infrastructure. Ofc, this threat isn't expected to materialize overnight. No publicly demonstrated quantum computer can currently break Bitcoin or Ethereum's production signatures at scale. But preparing major blockchain networks could take years. 20 tokens I'm tracking around the Post-Quantum narrative: [1] base:0x37696cd8f723ce541ac376f79fc109080e505ba3 – quantum-resistant L1 using XMSS since 2018. [2] algorand:native – Falcon-based State Proofs already live, with broader PQ initiatives. [3] $CKB – flexible cryptographic architecture with PQ signature support. [4] abelian:native – PQ-focused L1 combining lattice-based cryptography and privacy. [5] $CELL – modular blockchain infrastructure focused on PQ cryptography. [6] $QANX – EVM-compatible blockchain developing PQ security. [7] $MCM – early PQ blockchain using WOTS+ signatures. [8] $NAORIS – decentralized security infrastructure focused on PQ protection. [9] $STRK – STARK proofs offer a quantum-resistant foundation, while account signatures remain a separate challenge. [10] $ZEC – privacy ecosystem exploring long-term cryptographic resilience. [11] $NXS – security-focused blockchain with signature-chain architecture. [12] $QUBIC – quantum computing-related ecosystem, with a less direct PQC investment thesis. [13] minima:native – decentralized blockchain with quantum-related security ambitions. [14] $QTC – Quantus, a PQ-focused blockchain project. [15] $FHE – Mind Network, focused on encrypted computation rather than native PQ signatures. [16] $QONE – quantum-security and migration-focused infrastructure. [17] $AME – smaller blockchain project associated with PQ security claims. [18] $GEEQ – security-focused blockchain infrastructure. [19] solana:AUuCEHQ7sm2i5GmaHrpE961voWcTY8U6mgrkhcV7pump – QuStream, a smaller project making quantum-security claims. [20] $TDC – Tidecoin, an early hash-based PQ blockchain project. These projects are at very different stages. Some already use PQ signatures, others offer partial protection, while several remain roadmap-driven or only indirectly exposed to the narrative. My view: I would prioritize projects with actual cryptographic implementations over those relying mainly on quantum-related marketing. base:0x37696cd8f723ce541ac376f79fc109080e505ba3 and algorand:native are worth a closer look from a technical perspective. $STRK is also interesting because of its STARK-based architecture, although quantum-resistant proofs alone don't make an entire blockchain quantum-safe. I also think established ecosystems such as $ETH could benefit from a successful transition toward PQ security. The real opportunity may extend beyond individual L1 tokens into wallets, custody, interoperability and security infrastructure.