MacSync Stealer’s Evolution Escalates macOS Security Concerns

2 mins mins

Key Points:

MacSync Stealer has adopted Apple notarization for improved stealth.
The malware poses significant threats to cryptocurrency assets.
Innovations in cybersecurity are crucial in response to evolving threats.

MacSync Stealer malware on macOS has evolved significantly, now using Apple-notarized Swift apps, as reported by SlowMist’s Chief Security Officer 23pds on December 23.

This evolution heightens risks for cryptocurrency users on macOS, as MacSync targets sensitive wallet data, exploiting Apple’s security mechanisms to bypass user vigilance.

The Evolution of MacSync and Cryptocurrency Security Impacts

MacSync Stealer malware has transitioned from low-level methods to advanced tactics, including Apple notarization, to improve stealth. It disguises itself as legitimate applications using disk images with decoy files.

In doing so, the malware acquires a higher level of user trust, bypassing traditional security checks. Significant changes include the elimination of user-required terminal operations, now leveraging remote server execution. This transition has allowed it to target more sensitive data, including cryptocurrency wallets, increasing the potential for private key leaks among users. Apple has responded by revoking the malware’s developer certificate following a report by Jamf Threat Labs.

“Our findings on the evolution of the MacSync Stealer highlight the significant threats to macOS users, particularly in the cryptocurrency space.” – Jamf

Market Data

Did you know? The MacSync Stealer malware evolved from an earlier variant known as Mac.C, created in April 2025, signaling a shift towards more sophisticated threats that now exploit Apple’s security processes to target cryptocurrency assets.

Ethereum (ETH) is valued at $2,957.12, with a market cap of $356.91 billion and a 12.09% dominance, according to CoinMarketCap. The daily trading volume stands at $20.23 billion, changing 36.58% over 24 hours. Price fluctuations include a -2.34% drop in 24 hours and a 0.58% rise over 7 days, amid major losses over longer periods.

ethereum-daily-chart-2296 — Ethereum(ETH), daily chart, screenshot on CoinMarketCap at 06:43 UTC on December 23, 2025. *Source: CoinMarketCap*

Experts from Coincu suggest that the increasing sophistication of malware targeting crypto assets may necessitate stronger regulatory frameworks and enhanced security protocols. Historical trends indicate that such threats often spur innovations in cybersecurity measures, fostering an industry focus on user protection and data security enhancements.

DISCLAIMER: The information on this website is provided as general market commentary and does not constitute investment advice. We encourage you to do your own research before investing.