Christian Hascheks blog
Sending Emails to my 3-year-old - How I'm using email and timecapsules as a fun legacy for my son to find
Let's Encrypt wildcard certificates - the easy way - Using DNS standalone - No credentials needed and working with every DNS provider
SSH based comment system - because input fields are too easy
ZFS over iSCSI storage in Proxmox - all the power of ZFS without needing large disks in your nodes
Simple Raspberry Pi powered SMS Gateway - make your projects send SMS with a simple REST API
Build your own datacenter with PXE and Alpine - Who needs docker when you can run old laptops as blade servers
How I heat my home by mining crypto currencies - and cutting my electricity bill in half in the process
The perfect file server - Use all your disks for storage by booting a USB RAM disk
Stopping phishing campaigns with bash - how to poison phishing sites with fake data
The encrypted homelab - creating the most secure homelab there is
The A1 Telekom Austria Hack - they came in through the web shells
App controlled garden irrigation system for less than 20 Bucks - put those Raspberry Pis you have laying around to a good use
Threat vector: Legacy static websites - Surely old HTTP-only sites can't be vulnerable if not updated for 5 years, right?
I scanned the whole country of Austria and this is what I've found - IP cameras, printers, industrial controls to name a few..
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
Teaching in minecraft - logic gates have never looked so good
Making a smart meter out of a dumb one for 4 $ - and displaying it on an awesome dashboard
So you have been scammed - a small guide on how to strike back and be a bad scamee
How to fight child pornography with a Raspberry Pi and deep learning - Finding illegal content with just 10 Watts of power
Reverse engineering your mobile banking app - to make a PHP script that automates checking your balances
Raspberry Pi + Deep Learning home security system - From start to finish
Raspberry Pi controlled cactus lamp - adding power to a cheap lamp
Teaching your fish tank LEDs new tricks - for just a few bucks and you can even make some virtual clouds
API Heaven ICO - finally an ICO for an existing product
Making an awesome dashboard for your crypto currencies in 3 steps - using InfluxDB, Grafana and PHP
How to defend your website with ZIP bombs - the good old methods still work today
Creating the safest ETH paper wallet with a Raspberry Pi - with a printer and without an internet connection
Accepting Ethereum payments without external services - You don't need to pay for merchant systems
DIY vertical hydroponic system - grow vegetables in small spaces
Making a simple Raspberry Pi Bitcoin/Ethereum trading bot - with rocket.chat and Slack status reporting
Is Guetzli useful in production? - It's much better than google promised - 51% smaller images
My door sends me chat messages - Raspberry Pi powered door sensor and Rocket.Chat bot with some neat info
Finding bombs in the forest - treasure hunters make it easy to find them
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
Forget Pay2Win - the time has come for Learn2Win - how to reward players in any game for academic achievements
Why hackits are the first thing I teach new classes - they represent everything I love about computer science
My door sends me emails - Simple and cheap Raspberry Pi burglar alarm
HTML5 heat spreading simulation - with a simple JS algorithm
DIY cloud lamp for fun and profit - ok, just for fun.. no profit involved
DIY hydroponic pot for ~36€ - Easy to build and awesome for your plants
Letting students mod school computers - with some amazing results
How to visualize RADIUS connections - by parsing Windows Server log files
My company just turned 10 and it was quite a ride - also: about the time Thomas Schranz and I almost invented Dropbox
IKEA Server Rack - nope, not a lack rack
Raspberry Pi controlled power sockets - it's as easy as it sounds
Chromebooks for Work & Classrooms - are they worth it?
That (not so) awesome time the police raided my home - lesson learned: Don't click on links random people send you
Water cooled NAS made from spare parts - with Macguyverish solutions for common problems
DIY: Cheap wall mounted, water cooled PC for 51$ - with LED backlight and and all the good stuff
Let's analyze over twenty thousand proxies - It won't get much better
Analyzing 443 free proxies - Only 21% are not shady - what about the other 79%?
Why are free proxies free? - because it's an easy way to infect thousands of users and collect their data
Raspberry Pi temperature monitor - with a nice graph and live updates
What would happen if you'd embed a remote JPEG with a HTTP link but the remote server is forcing HTTPS? -
Neue Reifeprüfung analyzed - The simple way to get a good grade
Repairing a closed loop CPU water cooler with aquarium tubing - air bubbles... those f***ing air bubbles
Raspberry Pi 2 wireless temperature box - The π² + wifi + 1wire sensor = pure awesomeness
hackthissite.org ascii code picture challenge -
Announcing: Socialcube LITE - My proof-of-concept evolved to a intuitive platform which is free for every educational institution
PHP script that filters moods from twitter - ..how depressed is the web?
Temperature visualization - from 6 months of data
Raspberry Pi controlled LEDs - to visualize the up-state of my servers
My XP-based grading system - a modern approach to grading in the year 2014