Protect your exchange at every level: Vet new listings, monitor core assets, and ensure global compliance.
Secure Exchange Operations and User Assets
“We are big fans of BlockSec and have been deeply involved from the inception of BlockSec to the use of each of its products. Phalcon is a very good security tool, to help Bybit achieve on-chain tracking and web3 contract security monitoring. We will have more cooperation with BlockSec in the future.”
Web3 Attack Surfaces: A Penetration Testing Overview
Crypto institutions keep every traditional attack surface and add the money-handling chain on top of it. This article gives testers a practical abstraction of the running system: a four-component model—Application, Authorization and Signing, Blockchain Interaction, and Infrastructure—with each component's responsibility, representative implementations, and inherited attack surfaces. It then structures web3-specific coverage into five attack-surface areas, from production and automation operations through signing intent, approval and withdrawal chains, and fund logic to on-chain transactions and deployed contracts.
~$23M Lost: Cosmos EVM, Moonwell Exploits | BlockSec Weekly
During the reporting period (2026/08/22 - 2026/08/30), we cover 5 blockchain security incidents totaling approximately $22.7M in losses; an estimated $74M-$119.5M was drained from Tectonic, most of it erased when Cronos was rolled back to its pre-exploit state. The highlight is a six-chain Cosmos EVM exploit series (~$5.7M realized), traced on TAC Chain, where a shared balance-synchronization bug chained an underflow and an overflow to drain a staking pool. The report also analyzes Moonwell's combined collateral-accounting and oracle price manipulation, Tectonic's combined oracle-price and receipt-token exchange-rate manipulation of low-liquidity collateral, an Ajna liquidation business-logic flaw, and a Rain Card Contract Exploit Series with an Ed25519 signature-verification bypass (Avici, Tria, and others) on Solana.
Rules of Engagement and Production Safety for Institutional Blockchain Penetration Testing
A penetration test that touches signing, withdrawal, and ledger systems is prepared before it runs. This article follows the engagement lifecycle: turning a business decision into objective, scope, named owners, and authorized access; recording authority, permitted techniques, operating limits, prohibited activity, communications, and evidence handling in a Rules of Engagement document; and protecting live service with measurable stop criteria, monitoring, change coordination, and named pause authority. It closes with the remediation and retest that turn findings into validated controls.
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