Celer Bridge incident analysis

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Tl;dr: In this piece we share critical lessons about the nature of the Celer Bridge compromise, attacker on-chain and off-chain techniques and tactics during the incident, as well as security tips for similar projects and users. Building a better crypto ecosystem means building a better, more equitable future for us all. That’s why we are investing in the larger community to make sure anyone who wants to participate in the cryptoeconomy can do so in a secure way.

While the Celer bridge compromise does not directly affect Coinbase, we strongly believe that attacks on any crypto business are bad for the industry as a whole and hope the information in the blog will help strengthen and inform similar projects and their users about threats and techniques used by malicious actors.

By: Peter Kacherginsky, Threat Intelligence

On August 17, 2022, Celer Network Bridge dapp users were targeted in a front-end hijacking attack which lasted approximately 3 hours and resulted in 32 impacted victims and $235,000 USD in losses. The attack was the result of a Border Gateway Protocol (BGP) announcement that appeared to originate from the QuickHostUk (AS-209243) hosting provider which itself may be a victim. BGP hijacking is a unique attack vector exploiting weakness and trust relationships in the Internet’s core routing architecture. It was used earlier this year to target other cryptocurrency projects such as KLAYswap.

Unlike the Nomad Bridge compromise on August 1, 2022, front-end hijacking primarily targeted users of the Celer platform…

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