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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 [email protected]), 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

@vernetto
vernetto / todo
Last active August 5, 2023 08:00
TODO
https://www.epam.com/services/artificial-intelligence
https://kb.epam.com/display/EPMLND/Learning+and+Development
https://www.coursera.org/learn/generative-ai-with-llms/home/week/1
https://www.coursera.org/learn/neural-networks-deep-learning/lecture/rz9xJ/why-deep-representations
# AI-900: