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Daniel S. Billing dsbilling

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@hackermondev
hackermondev / zendesk.md
Last active December 10, 2025 17:11
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

@JonnyWong16
JonnyWong16 / python_ssh.py
Last active February 12, 2024 21:09
Run a SSH command using Python
# 1. Install the paramikio module for python.
# pip install paramiko
# 2. Edit the SSH details below.
import paramiko
import sys
## EDIT SSH DETAILS ##
SSH_ADDRESS = "192.168.0.1"
@ziadoz
ziadoz / composer_path.json
Last active November 19, 2025 12:02
Composer Using Local Repositories and Branches
{
"repositories": [
{
"type": "path",
"url": "../relative/project/path"
}
],
"require": {
"${project}": "dev-${branch}"
}
@stopsatgreen
stopsatgreen / php-get-json.php
Last active May 31, 2019 17:55
PHP: get JSON, with headers
<?php
// Because I don’t use PHP often enough to remember it instantly
$opts = array(
'http'=>array(
'method'=>"GET",
'header'=>"Accept: application/json"
)
);
$context = stream_context_create($opts);
@Michael-Brooks
Michael-Brooks / passwordValidation.php
Last active July 7, 2024 03:44
Laravel Password validation Regex (Contain at least one uppercase/lowercase letters and one number)
<?php
/*
* Place this with the rest of your rules.
* Doesn't need to be in an array as there are no pipes.
* Password is required with a minimum of 6 characters
* Should have at least 1 lowercase AND 1 uppercase AND 1 number
*/
$rules = [
'password' => 'required|min:6|regex:/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d).+$/'
];
@brandonaaskov
brandonaaskov / jQuery Change Event: Proper Binding
Created January 11, 2012 21:34
jQuery's change() event doesn't work as expected with input text fields. This, however, does work.
/*
For some reason, the change() event only fires when the input field loses focus.
Binding to other options ('change keypress paste focus textInput input') will
fire the event several times, which is bad. The below code works even when
content is pasted into the text field, and only fires once as expected.
*/
$('#search-form .term').bind('input', function(){
console.log('this actually works');
});