November 13.2025
2 Minutes Read

The Safery Extension Scandal: How a Fake ETH Wallet Stole Seed Phrases

Coder working on Ethereum-related code in dark room, symbolizing fake Chrome extension threat.

Unmasking the Safery Scam: A High-Tech Heist

As cryptocurrency continues to gain traction, the risks associated with it evolve, as highlighted by the emergence of a malicious Chrome extension known as the "Safery: Ethereum Wallet." This extension, disguised as a legitimate Ethereum wallet, was uploaded to the Chrome Web Store on September 29, 2025, and recent investigations reveal a sophisticated mechanism designed to exfiltrate users' valuable seed phrases.

How Does the Attack Work?

The Safery extension exploits a convoluted method to transmit users' mnemonic phrases. By encoding them into Sui wallet addresses, the malware sends micro-transactions from the attacker's wallet. Included within these transactions is a minuscule amount of cryptocurrency, allowing the malicious code to operate undetected. As Kirill Boychenko from Socket security explains, this sophisticated technique avoids the need for a centralized command-and-control server, thereby enhancing the stealth of the operation.

Why Users Must Be Vigilant

The extension operates seemingly innocently while presenting users with functionality typical of Ethereum wallets, such as balance queries and transaction capabilities. However, this facade poses a significant threat, leaving unsuspecting users vulnerable to having their assets drained. Users are strongly advised to rely only on reputable wallet extensions and to be wary of any unexpected behaviors from their browser settings.

Best Practices for Securing Your Wallets

In light of this emerging threat, what steps can users take to secure their digital assets? Experts recommend using only trusted and established wallet extensions like MetaMask, and always downloading these from verified sources rather than through search engine results. Additionally, regular monitoring for suspicious behavior, such as unexpected RPC calls from their browser, can alert users to potential breaches. According to cybersecurity professionals, vigilance and cautious behavior can significantly mitigate risks in the volatile world of cryptocurrency.

Looking Ahead: The Landscape of Crypto Security

As the cryptocurrency landscape grows, evolving security threats will challenge how users protect their investments. The emergence of malware like Safery provides a clear warning: in the digital age, security must be proactive. Users must remain informed, actively monitor their wallet activities, and adopt strong security measures to safeguard their investments.

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