Ostium Halts Trading After $18M Oracle Key Breach Arbitrum-based perpetuals exchange Ostium has suspended trading after an $18.4 million exploit tied to a compromised off-chain oracle key, highlighting again how vulnerable trading venues can be when price infrastructure fails. The attack did not appear to stem from a direct breach of Ostium’s smart contract code.…
Reference: GitHub Bitcoin BIP-361 Draft Puts Quantum Security Back On The Agenda Bitcoin developers have introduced BIP-361, a draft proposal designed to prepare the network for a future migration away from legacy signature schemes that could become vulnerable in a post-quantum environment. The proposal, titled “Post Quantum Migration and Legacy Signature Sunset,” was authored by…
A hacker tied to the Trusted Volumes exploit has returned 1,122 ETH to the protocol, closing part of a security incident that began with a multi-million-dollar exploit earlier this year. The on-chain recovery is unusual because the attacker did not return everything. Instead, the wallet linked to the exploit sent back roughly $2 million worth…
Ethereum Research Thread Puts Sybil Resistance Back In Focus For Decentralized Networks is a useful reminder that crypto coverage is not only about token prices. Sometimes the more important story is the infrastructure, regulation, security, or product layer sitting underneath the market noise. The immediate point is straightforward: an Ethereum Research post examines Sybil risks…
Cardano activity is showing signs of recovery after EMURGO addressed user concerns tied to Yoroi wallet syncing and connection lag. The issue was a client-side wallet problem, not a protocol exploit, and there has been no indication that user funds were lost or that the Cardano network itself was compromised. TL;DR EMURGO patched Yoroi wallet…
TL;DR A prominent Ethereum MEV bot reportedly lost between $7.5 million and $15 million in a counter-MEV exploit. The attacker allegedly used fake token contracts to bait approvals and drain assets. The incident highlights approval hygiene risks for automated on-chain trading systems. Security Alert: The MEV bot JaredfromSubway.eth was exploited. — BlockSec (@BlockSecTeam) June 26,…
TL;DR SecondFi completed a final balance snapshot on June 26, 2026, after a Cardano wallet exploit. The snapshot covers 374 compromised wallets affected between June 21 and June 23. The snapshot is a refund-preparation step, not confirmation that users have already been paid. We have completed the final balance snapshot for affected wallets. — SecondFi…
TL;DR A legacy Aztec Connect smart contract was reportedly drained of about 909 ETH, worth roughly $2.1 million. The affected product was deprecated in 2023 and is separate from Aztec’s current network work. The exploit reportedly targeted the immutable RollupProcessorV3 contract. The case shows why abandoned or discontinued DeFi contracts can remain risky long after…
TL;DR Humanity Protocol is sunsetting compromised H tokens after a reported $36 million exploit. The breach reportedly involved malware on a developer machine and exposed private-key backups. A new audited ERC-20 token is planned, with eligible holders receiving tokens at a 1:1 ratio. The project may require KYC/AML screening for some compensation claims. Humanity Protocol…
TL;DR Coinbase’s Quantum Advisory Council says post-quantum migration planning should begin before quantum attacks become practical. The report estimates about 7 million BTC are quantum-vulnerable because public keys are exposed through legacy formats or address reuse. About 1.7 million BTC are said to sit in legacy Pay-to-Public-Key addresses, including early mined and potentially abandoned coins.…