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This posting is here to collect cyber security news in October 2024. I post links to security vulnerability news to comments of this article. You are also free to post related links to comments. →

LAN iSilencer Audiophile Ethernet Dongle Claims to ‘Quiet Your Network’ article says that at ‘just’ $100, it seems like a “bargain” compared to some audiophile Ethernet cables. iFi-Audio has released the LAN iSilencer, an audiophile accessory which aims to “quiet your network.” According to the Ethernet dongle designers in Japan, this product removes digital signal →

This posting is here to collect cyber security news in September 2024. I post links to security vulnerability news to comments of this article. You are also free to post related links to comments. →

One day I came across a device called “Ethernet Network Isolator” and started to wonder why we would need such device as standard Ethernet system that uses twisted pair cable and RJ-45 connectors is already isolated  from both ends of the cable (isolation transformers that can withstand 1500V).  When the network connections made with unshielded →

The PC floppy disk drive is a type of disk drive that reads and writes data to and from a floppy disk, which was a common data storage medium from the 1970s to the early 2000s. Floppy disks were so common in late 20th-century culture that many electronic and software programs continue to use save →

The Hacker Test was an old test of how much of a ‘hacker’ (as in ‘nerd’, not ‘cracker’) you are. Since it came out in 1990, almost all of the questions are obsolete. That makes it a really neat historical document of what people considered cool at the time. Hacker Test History https://github.com/hwayne/hacker-test-history →

Raspbertty Pi has release a new board: Pico 2. The Pico 2 has Raspberry Pi’s latest silicon, the RP2350. It is available now for $5. Raspberry Pi Pico 2: a RISC-V bet! https://www.youtube.com/watch?v=oXF_lVwA8A4 The RP2350 is Raspberry Pi’s second-generation in-house microcontroller design. The Raspberry Pi RP2350 is a major upgrade over the earlier Raspberry Pi →

DJing is the act of playing existing recorded music for a live audience. The modern DJ’s role as a performer who creates a seamless and extended mix of music for a dance party or club atmosphere evolved from radio personalities who introduced and played individual selections of recorded music on broadcast radio stations. A disc →

This posting is here to collect cyber security news in August 2024. I post links to security vulnerability news to comments of this article. You are also free to post related links to comments. →

A battery can be regarded as an ideal voltage source in series with an impedance, which is called internal resistance. When the battery works, the voltage output is lower than the open-circuit voltage (abbreviated as OCV). The difference is the voltage drop caused by the internal resistance. Internal resistance represents the battery’s limiting factor to →