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Attila Večerek vecerek

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@hackermondev
hackermondev / zendesk.md
Last active November 25, 2025 00:09
1 bug, $50,000+ in bounties, how Zendesk intentionally left a backdoor in hundreds of Fortune 500 companies

hi, i'm daniel. i'm a 15-year-old with some programming experience and i do a little bug hunting in my free time. here's the insane story of how I found a single bug that affected over half of all Fortune 500 companies:

say hello to zendesk

If you've spent some time online, you’ve probably come across Zendesk.

Zendesk is a customer service tool used by some of the world’s top companies. It’s easy to set up: you link it to your company’s support email (like support@company.com), and Zendesk starts managing incoming emails and creating tickets. You can handle these tickets yourself or have a support team do it for you. Zendesk is a billion-dollar company, trusted by big names like Cloudflare.

Personally, I’ve always found it surprising that these massive companies, worth billions, rely on third-party tools like Zendesk instead of building their own in-house ticketing systems.

your weakest link

@danpetitt
danpetitt / esmodules.md
Last active August 20, 2025 08:04
Typescript, Jest and ECMAScript Modules

Typescript, Jest and ECMAScript Modules (ESM)

Package.json

Add the type property to package.json to ensure modules are supported:

{
  "type": "module",
}