Crypto Alert: SlowMist & Sentinel Labs Expose Surging Cyberattacks—Here’s Why a Secure Wallet Wins
Crypto’s dark underbelly just got darker. Security giants SlowMist and Sentinel Labs are sounding alarms—sophisticated attack vectors are evolving faster than your average DeFi rug pull. But here’s the twist: the safest play isn’t another paranoid hardware wallet. It’s smarter than that.
The Attack Matrix Tightens
Phishing scripts now mimic institutional-grade platforms. Drainer bots lurk behind ‘airdrop’ traps. Even MetaMask signatures aren’t sacred anymore. Yet while hackers level up, most investors still treat security like an afterthought—right after checking their portfolio’s -60% ‘growth’ this quarter.
The Unlikely Hero
Multi-sig? Cold storage? Think simpler. The real shield? A wallet that auto-blocks malicious contracts before you even smell the scam. No seed phrase panic. No gas fee ransom. Just code that outthinks the thieves—while Wall Street still struggles with two-factor authentication.
Stay paranoid. The bots certainly are.
Malicious Firefox Extensions Are Stealing Crypto Wallets
A large-scale malware campaign has been discovered involving over 40 fake Firefox extensions posing as legitimate crypto wallets. Cybersecurity firm Koi Security has confirmed that this campaign has been ongoing since at least April 2025.
These plugins impersonate trusted names in the crypto space, including MetaMask, Coinbase, Phantom, and Trust Wallet, tricking users into handing over their most sensitive credentials like their private keys and seed phrases.
To gain the trust of users, the threat actors filled the extension download pages with fake five-star reviews, familiar branding, and inflated download figures. Some of these extensions are still live on the Firefox Add-ons store, with new malicious extensions even being added just last week, suggesting an active, evolving operation. Researchers suspect that a Russian-speaking threat group may be behind the campaign, due to Russian-language comments in the extension code and metadata found in a PDF file retrieved from a command server used in the operation.
It’s hard to be certain that any browser extension is safe, but users should generally VET every install and avoid fully trusting branding or ratings alone. When it comes to crypto wallets, mobile-only solutions are typically far harder to impersonate and a safer solution overall.
Mac Malware Targets Crypto Users with Fake Zoom Updates
If this wasn’t enough, Mac users are now being targeted by a sophisticated malware campaign with links to North Korean state-sponsored threat actors.
Cybersecurity firm Sentinel Labs discovered that the attacks begin with social engineering via platforms like Telegram, impersonating someone that the victim is likely to trust. They then lure the victim into downloading a malicious file, under the guise of a routine software update, typically a fake Zoom update.
Once executed, the file installs NimDoor, a stealthy malware written in an obscure programming language.
NimDoor acts as a “full-featured infostealer,” logging keystrokes, recording screens, stealing browser passwords, and extracting crypto wallet data. In order to avoid being detected by security tools, it also delays activation by several minutes. Another variant, CryptoBot, focuses specifically on infiltrating browser wallet extensions.
This campaign highlights a growing trend: macOS is not necessarily “safer by default” as many have believed. State-funded hacker groups are now aggressively targeting Apple devices with tailored malware designed to drain crypto wallets. Extra caution is crucial, especially when you’re handling crypto assets on macOS.
Why Best Wallet Keeps You Safer in Times of Cyberattacks
In a time when fake browser extensions and sophisticated malware are actively targeting crypto users, products like Best Wallet stand out by design.
Best Wallet is a mobile-only non-custodial wallet, meaning there’s no official browser extension, completely eliminating a major attack vector. If you see a browser add-on pretending to be Best Wallet, you can assume it’s fake.
On top of that, Best Wallet uses MPC (Multi-Party Computation) security, the same advanced tech trusted by big institutions, to protect your private keys without ever storing them in a single place.
Download the official Best Wallet app to stay ahead of the hacks and social engineering.