XDX Swap Hack

TOTAL LOST $5.0M
Medium Other huobi eco chain

What happened

The XDX Swap (DDEX) on the Heco chain’s cross-chain decentralized exchange DDEX was attacked on July 2. The attacker received 85.17 ETH (about $176,000) and transferred it to the Ethereum network. There appeared to be a backdoor in the DDEX code.

With the help and collaboration from DDEX, Star Labs, and the HECO White Hat Security Alliance, XDX Swap has recovered the majority of the funds involved in this incident, totaling more than $5M.

Case & protocol details

Classification Exchange (DEX) / Bridge & Cross-Chain
Protocol Type Exploit/Other
Smart Contract Language Solidity
Official Website xswap.link
Protocol Twitter/X @xswap_link

Funds Recovery

100.0%

Recovered

$5.0M

Net Loss

$0

Evidence & learning

Sources and on-chain records

Browse all hacks

Other incidents recorded with the same attack technique.

THORChain $10.7M
Numbers Protocol $14K
ChainSwap $4.4M
ChainSwap $800K

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