Attacker gains admin access and drains funds via ProxyAdmin contract
On April 1, Cyvers Security flagged unauthorized activity involving 18.4 million UPC tokens. The breach stemmed from a compromised administrative wallet, which was used to alter the ProxyAdmin contract and execute a hidden withdrawal function.
The stolen tokens—valued at $70 million—were siphoned from three management accounts and remain in a single wallet. No attempts have been made to sell or transfer them further as of reporting.
https://x.com/Upcxofficial/status/1907024397497749647
Team suspends all activity and confirms user funds remain safe
UPCX stated it acted immediately after detecting the breach, suspending all deposits and transactions. The company claims that personal user assets were not affected and an internal investigation is underway.
The incident triggered a 7% drop in UPC token price, falling from $4.06 to $3.77, according to CoinGecko. The project has yet to announce any compensation or recovery plans.
Web3 platforms increasingly vulnerable to internal attack vectors
This breach follows a disturbing pattern: attackers are no longer only exploiting smart contract bugs, but administrative roles and governance functions.
Without strict role-based access controls, platforms expose themselves to catastrophic losses even from a single wallet compromise.
Security failures can damage brand confidence for years
UPCX must now face the challenge of restoring user confidence. With no clear resolution or audit plan released, traders are calling for transparency and better access control standards.
Incidents like this also prompt the broader crypto ecosystem to rethink how smart contracts and wallet permissions are managed across DeFi and payments platforms.
Administrative security must become a priority, not an afterthought
UPCX’s exploit wasn’t due to market volatility or user error—it came from deep within its own system. As Web3 grows, ensuring the safety of administrative protocols and smart contract controls is essential.
Without it, millions—or billions—could disappear at the click of a button.