Ransomware gang closes physical shops! The Swedish supermarket chain Coop, one of the largest grocery stores in the country, had to close EVERY of its 800 branches on Saturday. The cyber incident Friday after point-of-sale tills and self-service checkouts stopped working. REvil ransomware gang targeted managed service providers (MSPs) and their customers in a massive →
Ethernet Killer is well known meme in many versions. Fiftythree.org presents: The Etherkiller and Friends says” “It all started one day with this guy, the origional Etherkiller, developed with a few misc parts to warn new users that the IT department is not to be messed with. You too can make one at home, connect →
This posting is here to collect cyber security news in July 2021. I post links to security vulnerability news to comments of this article. You are also free to post related links to comments. →
RISC-V is an interesting open hardware CPU. My Can RISC-V – Linux of Microprocessors – Start an Open Hardware Renaissance? post from few years back told that RISC-V is the most promising open CPU design, but asked can it succeed in competitive CPU market? In a quite short history a lot has happened. Not it →
I got 10BASE-T and 100BASE-TX Ethernet running through this over voltage protector. They are nor designed for faster data rate. Those protectors are designed to protect two 100 ohms wire pairs. They are designed to work well up to 60 MHz signal and have low capacitance (around 30 pF between wire pair wires). Links to →
A crowd of clubbers have breen trolled by DJs many times. Here are some funny examples of trolling of the highest order. Windows error song. DJ prank Armin van Buuren – This Is A Test (Arkham Knights Remix) →
Microsoft announces Windows 11, generally available by the holidays https://techcrunch.com/2021/06/24/microsoft-announces-windows-11-generally-available-by-the-holidays/ Microsoft today officially announced Windows 11, the next version of its desktop operating system. Microsoft plans to release Windows 11 to the general public by the holidays, so we can probably expect it sometime around late November. You will now also be able to run →
Here is a collectio of adapters for different phone line connectors around the world. Those telephone connector adapters are designed to connect RJ11/12 plug cable to wall phone outlet on different countries. Different countries use or used to use different type telephone connectors on wall outlets. Those adapters were are used convert one country specific →
They are Bipolar Junction Transistor. Both are NPN Transistors. Their difference is manufacturer and hFE and datasheet parameters, seriously. BC547 is European transistor while 2N3904 is American transistor. Both are common NPN bipolar junction transistors used for general-purpose low-power amplifying or switching applications. https://en.wikipedia.org/wiki/2N3904 The BC548 was released with, and often is found together in →
Building a sound system is often a highly personal process, from deciding what to get, to assembling and using it. Here is my PA system I built in 1990′s and used for some mobile DJing. The need for measurements were that it should fit easily to a normal size car with everything else that is →