|on 09 Oct 2019 Posted by Administrator Category: Security News|
When using MicroSD cards as hard drives, one simply has to swap out the SDcard, to get another iteration of the operating system and software for testing against original and future configurations.
Think of it as a method rapid parallel prototyping, without buying multiple copies of the hardware.
In this case we are using Single or Multiple Raspberry Pi 4B's for speed testing of advanced functions like decryption or bruteforce hash cracking. Instead of buying multiple sets of the hardware all we did is get extra MicroSDcard. We work on one set of dev and testing, then switch SDcards and try a slightly different iteration.
|on 01 Oct 2019 Posted by Administrator Category: Security News|
Today we invented a new "Mail-able" Computer that tracks itself as its being transported, measures radio channels, temperature, pressure, motion, speed and "calls home" when it finds an open network.
Sorry, it is proprietary technology and not for sale at this time, but maybe soon. - Todd
A cluster of "Pi" offers new hope in decrypting Ransomware. A cluster of 4 Raspberry Pi 4B's we named "Chico" because it is smaller than a loaf of bread.on 15 Sep 2019 Posted by Administrator Category: Security News
Ransomware has become an annoying problem here in Florida and the Southeastern United States. Many small companies and government agencies are not prepared and have no defense against the attacks. They also have no money to get new computers or repair the security problems that let the Ransomware in.
Below are some of the things we are looking at in addition to Decryption Projects as well as how we plan to setup the cluster for maximum efficiency.
1) Already making mods to the original configuration. We found a Windows Utility that will Format an SDCard in FAT 32 up to 2 Tb. (far past the Microsoft limitation of 32Gb) We used the fastest Camera Grade SDCards we could find with 64 Gb each.so a 4 Pi cluster has 256 Gb of Solid State Camera Grade SDCards as its primary Hard Drive.
4) The WiFi and Bluetooth are great but for pure computing strength we will shut them both down and use the Gigabit Ethernet Port. Every un-needed driver, program, or function shut down and removed increases the computing power of the Raspberry Pi 3 and 4.
5) Next we will be shut down devices and functions not used to save computing and electric power. More on that here: https://learn.pi-supply.com/make/how-to-save-power-on-your-raspberry-pi/
6) Then we will setup a RAMdrive and set the software to load the RAMdrive from the SDcard and then booting from the RAMdrive. (Because it is much faster) https://www.domoticz.com/wiki/Setting_up_a_RAM_drive_on_Raspberry_Pi?
7) When the cluster is complete it can be used as a high speed webserver. In fact, the Raspberry Pi manufacturer uses a cluster of Pi's to host their website and support sites. Very heavy, interactive websites with all sorts of multimedia too. https://www.techrepublic.com/article/low-cost-raspberry-pi-4-cluster-hosts-official-pi-website-handles-record-traffic-for-pi-4-launch/
Update for Monday, September 16, 2019
Today we reviewed memory device speed for the Raspberry 4B.
USB 3.0 vs MicroSD Storage
Since Raspberry Pi 4 now comes with two USB 3.0 ports, which support ~100MB/s read/write speed, Connecting a SSD USB 3.0 Drive gets even better speed..
But before you settle on one of those devices check out the transfer speed of the DDR4 on the Raspberry Pi 4.
DDR4 data transfer rate:
Update for the Week of October 7th, 2019
The first successful field test was conducted at an office building and residence near downtown Tallahassee, Florida.
We boosted Chico's Hardware configuration up to 7 Raspberry Pi 4B's and we had to order a cable to add the 8th one NEXT week.
The onside tests were successful. No problems with heat, power, batteries or networking.
Next Week we are going to work on the clustering and ramdisk to increase the speed of all operations.
More soon. - Todd :)