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BlockSec Phalcon Safeguards Yei Finance's $140M+ Assets in Real Time

Phalcon
February 12, 2025

Yei Finance ✖️ BlockSec Phalcon

As the largest lending protocol on the Sei network, Yei Finance dominates half of the ecosystem's total value locked (TVL). It supports a wide range of assets, including native assets, LSTs, stablecoins, and altcoins. It offers borrowers flexible options—from overcollateralized loans to undercollateralized loans via flash loan—while allowing lenders to earn passive income with dormant assets. This combination of accessibility and yield generation completely revolutionizes the DeFi lending experience for its users.

Yei Finance has integrated BlockSec Phalcon, the world's first attack monitoring and blocking system. Phalcon will provide 24/7 risk monitoring for Yei Finance and deploy automated response measures to neutralize threats, building a dynamic defense line.

Why is real-time monitoring necessary even after audits?

  • Even if protocols have been audited and known vulnerabilities fixed, zero-day vulnerabilities may still exist.
  • Protocol developers might inadvertently introduce new attack vectors during bug fixes, minor upgrades, or parameter adjustments.
  • External dependencies or even oversights in compilers can lead to vulnerabilities.

Phalcon fills this security void by providing real-time risk mitigation after protocols go live.

BlockSec Phalcon's Solution

24/7 real-time monitoring + 200 attack characteristics database + millisecond automated blocking 🟰 Proactive defense

Phalcon's attack detection engine uses clearly defined attack characteristics to accurately identify any attacks aimed at Yei Finance. Upon detecting an attack transaction, the system automatically sends alerts to designated channels (such as Telegram, Webhook, etc.), and initiates a response transaction (such as pausing the contract) to block the attack, minimizing potential losses.

Over two years of internal operation, we had intercepted 20+ attacks through white-hat rescues, preventing $20M+ in potential losses. Backtesting data from 2024 shows that Phalcon detected over 99.99% of attacks with a near-zero false positive rate.

Besides attack monitoring and blocking, we offer:

  • Custom monitoring solutions by security experts
  • Real-time monitoring of operational, interaction, and financial risks
  • Flexible monitoring of token prices, amounts, key variables, sensitive events, and function invocation
  • Automated responses with multi-signature wallets
  • Emergency response SOP and War Room services
  • Root cause analysis
  • Audits of fixed smart contract codes
  • ...

Conclusion

Yei Finance delivers transparent, efficient, and flexible investment opportunities for users through cutting-edge technology. Meanwhile, BlockSec Phalcon establishes the strongest possible defense for Yei Finance to ensure that its users can enjoy their returns with complete peace of mind.


About Yei Finance

Yei Finance is the largest money market on the Sei network, reaching a Total Value Locked (TVL) of $140M since its launch in June 2024. With a $2M seed round led by Manifold and Kronos Research, it is dedicated to redefining the decentralized lending market through modular solutions and omnichain liquidity.

Yei's Cross-Chain Bridge, powered by Stargate and Circle's CCTP technology, enables seamless asset transfers across multiple chains, reducing transaction costs and eliminating liquidity fragmentation issues. The protocol supports native assets, LSTs (Liquid Staking Tokens), stablecoins, and altcoins. Through High Efficiency Mode (E-mode), users can maximize capital efficiency using correlated assets such as stablecoins and SEI-related assets, while Isolation Mode provides targeted risk management through isolated pools with customized settings. Additionally, Yei Finance offers Flash Loans, providing flexible capital access for DeFi users and projects.

About BlockSec Phalcon

BlockSec Phalcon is the industry's only automated attack monitoring and blocking SaaS platform. It features advanced capabilities for attack detection, customizable monitoring rules, and automated responses. This allows for the accurate identification and prompt blocking of not only attacks but also operational, interactional, and financial risks.

If you have concerns about your project's security after its launch, consider scheduling a Phalcon product demo. You can speak directly with our security experts and even apply for a free trial to experience firsthand how Phalcon safeguards your protocol.

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