When assessing a building’s network security from an adversarial perspective, it can often be helpful to look for open network ports that are easily accessible. These ports can provide a means for an adversary to plug in a convert network device and may also provide the means by which further network compromise may be possible. …
This week we’ll be looking at making a blinky badge in KiCad. Blinky badges are those circuit boards you see hanging around people’s necks at any nerd related conference. Some of them are highly sophisticated and some are just eye candy. Just about all of them blink. The hope of this live stream is to …
If you’ve ever wanted to learn how to get a PCB printed from scratch, be sure to attend this live stream. We’ll go over how to use a breadboard, how to look at datasheets, how to read a schematic, and how to use KiCad to build a PCB. Time: April 28th @ 10am Central Live …
Live Stream Link: https://youtu.be/ydoIF4FnoFQApril 14th, 10am Central Time Links to Purchase the Teensy and USB Rubber Ducky https://www.pjrc.com/store/teensy40.html https://shop.hak5.org/products/usb-rubber-ducky-deluxe Download the above file before the start of class and unzip it. File contains list of commands covered last week, the JS Ducky Encoder mentioned below, the phukdlib library, and an Arduino INO program for testing …
Live Stream: Automating Host Defense with the Teensy and USB Rubber Ducky Read More »
For this livestream we are going to talk about commands to run on a host box to find a malicious actor. If you have a few you prefer, let me know what those are and I’ll see about adding them to the list. We’ll also talk a little about automating these checks using auto-typing USB …
On Friday, March 27th at 10:00am Central Time, I will be hosting a Wireshark refresher training course on YouTube livestream. If you would like to participate there are a few things you will need to do. Download the file at the bottom of the page and extract the contents. You should have 4 PCAP files …
In the previous article we discussed using the astable multivibrator as a duel output timer. By just adjusting a resistor and capacitor, you can set the timing to whatever you want. I want to explore that option further and show how this is done, the effect you can expect, and how you can also adjust …
In order to create a timing mechanism, you don’t have to have a 555 timer, an IC chip, or an oscillator. With a few passive components and two transistors, you can can an astable multivibrator with two outputs. The video below will discuss how it works, how to build it, and what the output looks …
So far in the 555 timer series I’ve discussed 2 different modes of operation: Astable mode and Monostable mode. There is however, a third less used mode called Bistable mode where the 555 can be configured to output a high or a low on demand. There are no pesky timing resistors or capacitors. The circuit …
One of the toughest transmitters to direction find is that of an unauthenticated, WiFi client. Without being attached to an access point, a WiFi client may only send out a transmission, or probe request, once every 5 minutes. It is not uncommon to see requests sent every 20 minutes. There are ways to expedite the …
