Blocked HomeCoin Attack: Industry's First Successful Blocking Story
Dec 12 2023

Since BlockSec’s debut in 2021, we have long maintained that code auditing alone cannot solve Web3 security issues. Therefore, we have been investing in exploring new paradigms for Web3 security. Thus we created Phalcon Block, the world's first crypto hack-blocking system.

Before the launch of Phalcon Block, the system had been running internally for 2 years, successfully blocking over 20 hacks, and rescuing more than 14 million USD worth of assets, including 3.8 million for Saddle Finance, 2.4 million for Platypus, 5 million for ParaSpace, and more.

In this series of articles, we will present representative successful stories of our system Phalcon Block. Let's start with the game-changing story in Web3: the industry's first successful defense against hacks.

How We Blocked the Attack Against HomeCoin

Guided by the belief that securing the Web3 ecosystem requires more than just security audits, we developed a prototype of the proactive threat prevention system (i.e., Phalcon Block) in early 2022. Embracing the unknown and unsure if the system will genuinely function and deliver results, we experienced a blend of apprehension and excitement.

On Mar 05 2022 04:35:19 PM (UTC), our system detected a pending attack initiated by the attacker (0xC711374BaC07Df9bB9dbAC596451517cEcBf0F0f). Following this, another component of our system automatically triggered the construction of a countering transaction, which was promptly sent (0xf3bd801f5a75ec8177af654374f2901b5ad928abcc0a99432fb5a20981e7bbd1) and successfully blocked the attack (the failed original attack tx: 0xc161973ed0e43db78763aa178be311733d4ffb77948d824ed00443803d22739c).

the countering transaction created by our system

Due to the fact that the victim contract was still vulnerable (a typical reentrancy issue), the threatened assets were transferred to a secure and publicly dedicated rescue account. Ultimately, this case had a happy ending. We reached out to the project (i..e, Homecoin) and returned the rescued tokens (0x31bff8989e9d627331435df9fed118f988b50bd1ab3b6056600ce86ccf0275ea) to their deployer account (0x67368f4c89dda2a82d12d3a703c32c35ff343bf6).

Although the amount of tokens rescued was not significant compared to the losses in many incidents, this marks the first publicly recorded attempt to automatically prevent an ongoing attack successfully. We believe this is the right direction for securing the blockchain ecosystem. This tangible example demonstrates that it is achievable, representing "a small step for man, a giant leap for mankind".

Despite the numerous challenges that remained, this represented the dawn and future that was soon to arrive, and we were dedicating ourselves to making it happen in the near future.

How to Access the Service

Since the launch of Phalcon Block in November, we have gradually opened access to the system. The access process is as follows:

  1. Book a demo presentation
  2. We will reach out to you to schedule a demo meeting
  3. Our security experts will complete the integration of your protocol

Let Phalcon Block build a defense line for your protocol. It doesn't require much work on the protocol side and would never bring in additional risk. It's just like a shield providing an additional layer of safety. Book a demo now!

About Phalcon Block

Phalcon Block is an attack monitoring and automated blocking platform launched by BlockSec, a leading Web3 security company. The platform is capable of accurately identifying attacks and automatically blocking them. Phalcon Block aims to provide comprehensive post-launch security protection for Web3 projects, including continuous monitoring, attack blocking, and emergency response, safeguarding on-chain assets for protocol providers, LPs, and DAO organization participants.

To date, Phalcon Block has successfully blocked over 20 hacker attacks, rescuing more than $14 million in assets. Even in the early customer stage, Phalcon Block gained recognition and a grant from the top DeFi protocol Compound and established an attack-blocking platform for it.


Twitter: @Phalcon_xyz


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