Dan Reiland dmreiland

hi, i'm daniel. i'm a 15-year-old high school junior. in my free time, i hack billion dollar companies and build cool stuff.

3 months ago, I discovered a unique 0-click deanonymization attack that allows an attacker to grab the location of any target within a 250 mile radius. With a vulnerable app installed on a target's phone (or as a background application on their laptop), an attacker can send a malicious payload and deanonymize you within seconds--and you wouldn't even know.

I'm publishing this writeup and research as a warning, especially for journalists, activists, and hackers, about this type of undetectable attack. Hundreds of applications are vulnerable, including some of the most popular apps in the world: Signal, Discord, Twitter/X, and others. Here's how it works:

Cloudflare

By the numbers, Cloudflare is easily the most popular CDN on the market. It beats out competitors such as Sucuri, Amazon CloudFront, Akamai, and Fastly. In 2019, a major Cloudflare outage k

Building SIEM on Amazon OpenSearch

SIEM stands for Security Information and Event Management. It is a tool that helps organizations collect, store, and analyze security data from a variety of sources. This data can be used to identify security incidents, investigate security breaches, and comply with security regulations.

Customers need SIEM for a variety of reasons, including:

To improve their security posture
To comply with security regulations
To investigate security incidents

How to deploy a Rails 7.1 app with Postgres and Kamal on a single server

I think you have looked at the tutorial from Mr. Heinemeier Hansson at least once or twice and have a similar setup.

rails new kamal_pg --css tailwind --skip-test --database=postgresql

cd kamal_pg

PostgreSQL is Enough

Background and Cron Jobs

Install Rancher Manager With Lets Encrypt (Linux)

Infrastructure

Domain Name
Ability to make DNS Changes
Debian 11 Virtual Machine (Should work with Ubuntu)
Port 80 & 443 must be accessible for Let's Encrypt to verify and issue certificates

Pick a subdomain and create a DNS entry pointing to the IP Address that will be assigned to the Rancher Server

Proxmox - SPICE client setup for MacOS

Install a working (and compiled) version of virt-viewer. You may view the homebrew package's upstream source on GitHub.
```
brew tap jeffreywildman/homebrew-virt-manager
brew install virt-viewer
```
Once that's installed should be able make a call remote-viewer with a pve-spice.vv file downloaded from proxmox web interface

Deploy K3s and Rancher on Raspberry Pi 4 cluster

Today I tried to setup a small Kubernetes cluster on top of 3 Raspberry Pi 4 (4GB Memory). Here is the steps to install the cluster.

Preparation

I have 3 Raspberry Pi 4 stacked with PoE headers and connected to a PoE switch at home. The are connected to Internet through a home router. All Pis are equipped with a 64GB Samsung SDXC card flushed with Ubuntu 20.04 image.

	#!/usr/bin/env -S bash -c "docker run -p 8080:8080 -it --rm \$(docker build --progress plain -f \$0 . 2>&1 \| tee /dev/stderr \| grep -oP 'sha256:[0-9a-f]*')"

	# syntax = docker/dockerfile:1.4.0

	FROM node:20

	WORKDIR /root

	RUN npm install sqlite3

	javascript: Promise.all([import('https://unpkg.com/[email protected]?module'), import('https://unpkg.com/@tehshrike/[email protected]'), ]).then(async ([{
	default: Turndown
	}, {
	default: Readability
	}]) => {

	/* Optional vault name */
	const vault = "";

	/* Optional folder name such as "Clippings/" */

	const http = require('http');
	const fs = require('fs');
	const path = require('path');

	const fileLocation = path.join(__dirname, 'video.mp4');

	fs.writeFileSync(fileLocation, '');
	const file = fs.createWriteStream(fileLocation);

	function printSize(bytes) {