Why Crypto Bridges Remain a Weak Point in the Industry

The recent $292 million KelpDAO exploit highlights the ongoing issue of crypto bridge hacks, which have become a recurring problem in the industry. These hacks occur due to the inherent weaknesses in the design of bridges, which are meant to facilitate the transfer of assets between blockchains. Instead of being secure connectors, bridges have turned into weak points, resulting in significant financial losses over the years. The root cause of the problem lies in the way bridges are built, with a core issue being the trust placed in intermediaries. Most bridges do not fully verify transactions on other chains, instead relying on smaller systems to report the information, which creates a risk of false data being fed into the system. Experts believe that the problem is not just a matter of bad code or careless mistakes, but rather a fundamental flaw in the design of bridges. The use of trusted intermediaries, such as validator groups or external networks, creates a single point of failure, which can be exploited by attackers. To address this issue, it is essential to remove single points of failure and rely on independent data sources. Other approaches, such as hardware protections, better monitoring, and cryptographic verification, can also help make bridges safer. However, a more fundamental shift in the design of bridges is needed to prevent these problems from continuing.