
Christian Haschek's Blog
@christian_hascheks_blog@robot.villas
Christian Haschek's projects and tutorials on cybersecurity, self-hosting, Raspberry Pi, programming, infrastructure, and teaching.
Source: https://blog.haschek.at/rss.xml
Homepage: https://blog.haschek.at
You should self-host your mail server - maybe even at home - because spam is a solved problem
#SelfHosting #Email #Cybersecurity
The ultimate Raspberry Pi gitops cluster - Booting and auto provisioning a Docker Swarm cluster with PXE and enjoying zero-downtime deployments from a single git repository
#RaspberryPi #DevOps #SelfHosting
Sending Emails to my 3-year-old - How I'm using email and timecapsules as a fun legacy for my son to find
#Legacy #Parenting #Digital
Let's Encrypt wildcard certificates - the easy way - Using DNS standalone - No credentials needed and working with every DNS provider
#Security #LetsEncrypt #DNS
SSH based comment system - because input fields are too easy
#Cybersecurity #OpenSource #DevTools
ZFS over iSCSI storage in Proxmox - all the power of ZFS without needing large disks in your nodes
#Proxmox #ZFS #iSCSI
Simple Raspberry Pi powered SMS Gateway - make your projects send SMS with a simple REST API
#RaspberryPi #IoT #APIs
Build your own datacenter with PXE and Alpine - Who needs docker when you can run old laptops as blade servers
#SelfHosting #Servers #Linux
How I heat my home by mining crypto currencies - and cutting my electricity bill in half in the process
#CryptoMining #HomeAutomation #EnergySaving
The perfect file server - Use all your disks for storage by booting a USB RAM disk
#Tech #SelfHosting #Storage
Stopping phishing campaigns with bash - how to poison phishing sites with fake data
#Cybersecurity #Bash #Phishing
The encrypted homelab - creating the most secure homelab there is
#Homelab #Security #Tech
The A1 Telekom Austria Hack - they came in through the web shells
#Cybersecurity #Hacking #WebSecurity
App controlled garden irrigation system for less than 20 Bucks - put those Raspberry Pis you have laying around to a good use
#DIY #RaspberryPi #IoT
Threat vector: Legacy static websites - Surely old HTTP-only sites can't be vulnerable if not updated for 5 years, right?
#Cybersecurity #WebSecurity #LegacySystems
I scanned the whole country of Austria and this is what I've found - IP cameras, printers, industrial controls to name a few..
#Cybersecurity #Scans #Austria
The curious case of the Raspberry Pi in the network closet - how we found, analyzed (with the help of Reddit) and in the end caught the culprit of a malicious device in our network
#Cybersecurity #RaspberryPi #NetworkSecurity
Teaching in minecraft - logic gates have never looked so good
#Education #Gaming #Minecraft
Making a smart meter out of a dumb one for 4 $ - and displaying it on an awesome dashboard
#DIY #IoT #HomeAutomation
So you have been scammed - a small guide on how to strike back and be a bad scamee
#Cybersecurity #Scam #SelfDefense
How to fight child pornography with a Raspberry Pi and deep learning - Finding illegal content with just 10 Watts of power
#AI #RaspberryPi #Cybersecurity
Reverse engineering your mobile banking app - to make a PHP script that automates checking your balances
#Cybersecurity #ReverseEngineering #MobileSecurity
Raspberry Pi + Deep Learning home security system - From start to finish
#RaspberryPi #DeepLearning #Security
Raspberry Pi controlled cactus lamp - adding power to a cheap lamp
#RaspberryPi #DIY #IoT
Teaching your fish tank LEDs new tricks - for just a few bucks and you can even make some virtual clouds
#DIY #HomeAutomation #Aquarium
API Heaven ICO - finally an ICO for an existing product
#Tech #Finance #Dev
Making an awesome dashboard for your crypto currencies in 3 steps - using InfluxDB, Grafana and PHP
#DataVisualization #Monitoring #HomeLab
How to defend your website with ZIP bombs - the good old methods still work today
#Cybersecurity #WebSecurity #Hacking
Creating the safest ETH paper wallet with a Raspberry Pi - with a printer and without an internet connection
#Crypto #Security #RaspberryPi
Accepting Ethereum payments without external services - You don't need to pay for merchant systems
#Ethereum #Crypto #SelfHost
DIY vertical hydroponic system - grow vegetables in small spaces
#DIY #Gardening #HomeTech
Making a simple Raspberry Pi Bitcoin/Ethereum trading bot - with rocket.chat and Slack status reporting
#RaspberryPi #Crypto #Bots
Is Guetzli useful in production? - It's much better than google promised - 51% smaller images
#ImageCompression #WebPerformance #Guetzli
My door sends me chat messages - Raspberry Pi powered door sensor and Rocket.Chat bot with some neat info
#RaspberryPi #IoT #HomeAutomation
Finding bombs in the forest - treasure hunters make it easy to find them
#Security #History #Explosives
How a scammer stole 500$ from me and in the end begged me not to tell his parents - Thank god not all scammers are professionals
#CyberSecurity #Scam #PersonalStory
Forget Pay2Win - the time has come for Learn2Win - how to reward players in any game for academic achievements
#Gaming #Education #Inspiration
Why hackits are the first thing I teach new classes - they represent everything I love about computer science
#Education #ComputerScience #Cybersecurity
My door sends me emails - Simple and cheap Raspberry Pi burglar alarm
#RaspberryPi #HomeAutomation #DIY
HTML5 heat spreading simulation - with a simple JS algorithm
#WebDev #JavaScript #Simulation