One day I got a cheap MTester from some Chinese source. MTester is a cheap electronics component measurement device. It can detect component types and measure them. The meter has automatic detection PNP and NPN type bipolar transistors , N, P -channel MOSFET, JFET FET , diodes , two diodes, thyristors , resistors , capacitors →
This article is about measuring resistance, capacitance and inductance. The measurements described here talks about measuring components that not wired into any circuit. Resistors, Inductors and Capacitors are the most commonly used passive components in almost every electronics circuit. Out of these three the value of resistors and capacitors are commonly marked on top of →
First CWE Security Report Highlights the “Most Important Hardware Weaknesses” of 2021 has been released. “The goals for the 2021 Hardware List are to drive awareness of common hardware weaknesses through CWE, and to prevent hardware security issues at the source by educating designers and programmers on how to eliminate important mistakes early in the →
The United States Cybersecurity and Infrastructure Security Agency (CISA) warned last week on proof-of-concept (PoC) code for the BrakTooth Bluetooth vulnerabilities now being publicly available. BrakTooth is the name researchers with the Singapore University of Technology and Design gave to a set of roughly two dozen vulnerabilities in commercial Bluetooth Classic (BT) stacks and which →
A group (Jack Harlow, Pete Davidson, Chris Redd) performs a rap explaining cryptocurrency and NFT. Watch SNL comedy video at https://m.youtube.com/watch?v=mrNOYudaMAc →
I saw a quite interesting looking waveform from a 10W LED floodlight powered from 230V AC. It looks like when AC voltage waveform instantaneous voltage lower than some voltage, it takes practucally no current and above it it looks like a constant current load. This is picture of the light. This looks like this uses →
At some point this year, email turned 50 years old! In 1971, Ray Tomlinson sent the first email using the SNDMSG program on ARPANET. 50 Years of Email https://www.prnewswire.com/news-releases/50-years-of-email-301262676.html But if the history of email tells us anything, it’s that email isn’t going away any time soon Email is 50 years old, and still where →
This posting is here to collect cyber security news in November 2021. I post links to security vulnerability news to comments of this article. You are also free to post related links to comments. →
What is the problem of using a coiled extension cord? When the power cable passes a considerable load current, it will definitely heat up noticeably. As the load current increases, the temperature of the cable surface will be higher. A cable loaded near it’s rated current can feel that it is warm to the touch, →
LANtenna hack spies on your data from across the room! (Sort of) post tells that Mordechai Guri from the Ben Gurion University of the Negev (BGU) in Israel has recently published a new data exfiltration’ paper detailing an unexpectedly effective way of sneaking very small amounts of data out of a cabled network without using →