BlockSec and Tokenlon Reached Strategy Partnership

December 1, 2022

We are thrilled to announce that BlockSec and Tokenlon reached a strategic partnership to explore crypto assets security and risk management. BlockSec will provide a comprehensive risk management solution to help Tokenlon securely interact with crypto assets. We will have more in-depth cooperation in the Web3 world.

About Tokenlon

Tokenlon is a decentralized exchange and payment settlement protocol based on Ethereum blockchain technology. Since July 2019, Tokenlon has helped close to 200,000 users complete $25 Billion worth of transaction volume. The transaction success rate was and remains at 99.76%, the best amongst the rest of the DEX. Tokenlon’s vision is to become the open protocol for financial payment and settlement transactions.

Learn more about Tokenlon: Website | Twitter | Medium | Github Contracts | Discord

About BlockSec

BlockSec is a pioneering blockchain security company established in 2021 by a group of globally distinguished security experts. The company is committed to enhancing security and usability for the emerging Web3 world in order to facilitate its mass adoption. To this end, BlockSec provides smart contract and EVM chain security auditing services, the Phalcon platform for security development and blocking threats proactively, the MetaSleuth platform for fund tracking and investigation, and MetaSuites extension for web3 builders surfing efficiently in the crypto world.

To date, the company has served over 300 esteemed clients such as MetaMask, Uniswap Foundation, Compound, Forta, and PancakeSwap, and received tens of millions of US dollars in two rounds of financing from preeminent investors, including Matrix Partners, Vitalbridge Capital, and Fenbushi Capital.

Official website: https://blocksec.com/

Official Twitter account: https://twitter.com/BlockSecTeam

~$18M Lost: jaredFromSubway, Aztec & More | BlockSec Weekly

Jun 25 2026Security Insights

~$18M Lost: jaredFromSubway, Aztec & More | BlockSec Weekly

This weekly blockchain security report covers June 15 to June 21, 2026, with 3 notable incidents across Ethereum and BNB Chain totaling approximately $18.3M in losses. Two incidents are analyzed in detail. Based on on-chain analysis, the highlighted jaredFromSubway incident reveals a reversed approval attack pattern: unlike traditional exploits where attackers abuse vulnerabilities in trusted DeFi contracts to drain user-approved assets, this MEV bot proactively approved its own assets to untrusted third-party contracts for arbitrage. The attacker constructed fake wrapper tokens and swap pools that emitted real events but never consumed the granted allowances, with reported total losses of ~$15M. The report also covers Aztec's second exploit in three days, where a missing equality constraint between two witnesses for `old_data_root` in the escape hatch ZK circuit allowed the attacker to prove ownership of fabricated notes against a fake Merkle tree while passing on-chain root validation.

~$5.98M Lost: Aztec, Raydium & More | BlockSec Weekly

Jun 17 2026Security Insights

~$5.98M Lost: Aztec, Raydium & More | BlockSec Weekly

This weekly blockchain security report covers the period of June 8 to June 14, 2026, analyzing 4 notable incidents across Ethereum and Solana with total losses of approximately $5.98M. The highlighted events include Aztec Connect, where a missing input validation allowed the rollup's proof path and L1 settlement to reach inconsistent states, and Raydium, where a missing validation check on the legacy AMM v3 program allowed an attacker to manipulate the LP token redemption calculation and drain four pools. Both vulnerabilities had been live for years before exploitation. The report examines attack types including lack of input validation, integer overflow, and governance capture.

Zcash Orchard Soundness Bug Analysis | BlockSec Weekly

Jun 10 2026Security Insights

Zcash Orchard Soundness Bug Analysis | BlockSec Weekly

During the week of June 1, 2026, a critical soundness vulnerability was publicly disclosed in Zcash's Orchard shielded pool circuit, caused by a missing equality constraint in the halo2 ECC scalar multiplication gadget that could have enabled undetectable counterfeiting of ZEC within the Orchard pool through double-spending. The vulnerability, which existed for over four years since Orchard's activation in May 2022, was discovered by an AI-assisted security audit and patched through an emergency network upgrade (NU6.2). This single-event report covers the technical root cause (under-constrained ZK circuit relation), the AI-assisted discovery by researcher Taylor Hornby using Anthropic's Opus 4.8 model, the emergency response timeline, and the broader implications for the ZKP ecosystem.