Toggle navigation
Home
About me
Publications
This blog in the media
Futurelopment
a blog about
security
projects
teaching
programming
and other stuff
Get new posts by email
(~ one email every couple of months & no spam)
Your email address
Sign up
Sort by date
Sort by views
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
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
Threat vector: Legacy static websites
Surely old HTTP-only sites can't be vulnerable if not updated for 5 years, right?
App controlled garden irrigation system for less than 20 Bucks
put those Raspberry Pis you have laying around to a good use
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
Build your own datacenter with PXE and Alpine
Who needs docker when you can run old laptops as blade servers
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
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
My door sends me chat messages
Raspberry Pi powered door sensor and Rocket.Chat bot with some neat info
DIY cloud lamp for fun and profit
ok, just for fun.. no profit involved
Letting students mod school computers
with some amazing results
How to visualize RADIUS connections
by parsing Windows Server log files
Raspberry Pi controlled power sockets
it's as easy as it sounds
My company just turned 10 and it was quite a ride
also: about the time Thomas Schranz and I almost invented Dropbox
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%?
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
Chromebooks for Work & Classrooms
are they worth it?
Announcing: Socialcube LITE
My proof-of-concept evolved to a intuitive platform which is free for every educational institution
Why hackits are the first thing I teach new classes
they represent everything I love about computer science
My XP-based grading system
a modern approach to grading in the year 2014
Raspberry Pi controlled LEDs
to visualize the up-state of my servers
IKEA Server Rack
nope, not a lack rack
DIY hydroponic pot for ~36€
Easy to build and awesome for your plants
Temperature visualization
from 6 months of data
Raspberry Pi temperature monitor
with a nice graph and live updates
Why are free proxies free?
because it's an easy way to infect thousands of users and collect their data
My door sends me emails
Simple and cheap Raspberry Pi burglar alarm
HTML5 heat spreading simulation
with a simple JS algorithm
hackthissite.org ascii code picture challenge
PHP script that filters moods from twitter
..how depressed is the web?