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@hackermondev
hackermondev / zendesk.md
Last active October 15, 2025 14:59
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

@Zitrax
Zitrax / stringformat_constexpr_if.cpp
Last active November 7, 2023 23:06
stringformat with constexpr if
#include <string>
#include <iostream>
#include <memory>
/**
* Convert all std::strings to const char* using constexpr if (C++17)
*/
template<typename T>
auto convert(T&& t) {
@anokun7
anokun7 / main.go
Created August 1, 2017 16:05 — forked from filewalkwithme/main.go
Listening multiple ports on golang http servers
package main
import (
"net/http"
)
func main() {
finish := make(chan bool)
server8001 := http.NewServeMux()
@estk
estk / main.go
Created December 14, 2016 21:12
A Tour of Go: Web Crawler Solution
package main
import (
"fmt"
"sync"
)
type Crawler struct {
crawled map[string]bool
mux sync.Mutex
@pkuczynski
pkuczynski / LICENSE
Last active October 9, 2025 17:55
Read YAML file from Bash script
MIT License
Copyright (c) 2014 Piotr Kuczynski
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWAR