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This posting is here to collect cyber security news in July 2023. I post links to security vulnerability news to comments of this article. You are also free to post related links to comments. →

What is low Z on multimeter? Dual impedance digital multimeters have feature to control the input impedance of the multimeter. LoZ stands for Low Impedance (Z). This feature presents a low impedance input to the circuit under test. A typical digital multimeter has typically around 10 megaohms input impedance, which loads the circuit being measured →

Can terrestrial networks can meet the communications needs of future space missions? Maybe. Nokia is planning to launch 4G internet on the moon later this year, an executive for the company said. It will be used within Nasa’s Artemis 1 mission, which aims to establish a human presence on the moon again (last time was →

Passive Etherner hub is special device I have seen in use in 1990′s. Nowadays there is no real use for Passive Ethernet hub, because it will not work with modern Ethernet standards (it only worked with 10BASE-T). Actually using Ethernet hub is nowadays past days as they have been for a long time replaced with →

FreeBSD Celebrating Its 30th Anniversary https://www.phoronix.com/news/FreeBSD-30th-Birthday It was on 19 June 1993 that the FreeBSD name was chosen for the project born out of 386BSD. The first official release of FreeBSD though wasn’t until November 1993. https://www.freebsd.org/ FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. It is derived from →

The Sender Policy Framework (SPF) is an email authentication protocol that is designed to help prevent email spam and phishing attacks. It works by allowing email administrators to specify which IP addresses are authorized to send emails on behalf of a particular domain. When a receiving mail server receives an email, it can check the →

I have wanted for some time multimeter display to be as close as possible to the measurement point. MUSTOOL MT007 Pro-EN True RMS Digital Multimeter + Voltage Test Pen +Phase Sequences Meter 3 In 1 Color Screen Voice Broadcast is a nice and comfortable tester tool solves that! I find this multimeter very useful to →

There is a web page full of strange, potentially dangerous and funny electrical cable ideas at https://moeilijklastig.nl/verloopjes/ Do not try those yourself! The page shows even one of my cable idea… →

If you’re anything like me, chances are that you have a lot of gadgets in your home or office. But how much power are these gadgets using — and wasting? A common question is how to measure power consumption for devices. Some people are coming at this from a perspective of pure curiosity, others are →

Introduction My trusty MS8209 multimeter failed. It was the second same type multimeter that failed for me. Annoying, but not that bad that both of those multimeters had both lasted around 10 years or more for me. I needed to get a new multimeter. I wanted a multimeter with the same environmental measurement ranges as →