Hi all,

It started with installing a code extension. A blockchain developer looked for a 'Solidity Language' extension for Cursor, a VS Code variant, and selected one that appeared trustworthy based on its name and number of downloads. Unfortunately, it was a counterfeit from a spoofed publisher, quietly executing a script that gave hackers remote access, stole credentials, and infiltrated crypto wallets. He lost over $500,000 within minutes. Since Cursor uses Open VSX instead of the Microsoft Marketplace, attackers forged downloads and trusted the extension to deploy malware, such as Quasar RAT. Key lessons include never trusting download counts blindly, verifying sources carefully, keeping different environments separate, and relying only on trusted marketplaces.

One fake extension. One click. Half a million gone.
Always audit before you install.

Has something like this ever happened to you? Let’s talk.

If I held significant amounts of cryptocurrency, I would keep them on a hardware wallet and access crypto exchanges using GrapheneOS on a Pixel device or TailsOS. A standard desktop operating system is too challenging to secure reliably. I also understand that advanced malware, such as Quasar, could potentially compromise my password manager and even access my bank accounts. This risk is not limited to crypto users alone. The best security approach involves multi-factor authentication with separate devices, ideally including a hardware YubiKey. Although many banks are slow to adopt such measures, using a YubiKey provides added security through requiring a physical touch and a PIN (if set up), significantly increasing the difficulty for attackers to succeed.