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All about electronics and circuit design

Power grid hacking in USA and Russia

Electrical power grid hacking meets cyber war politics talk? Or just fear-mongering and fake news? What would happen if someone switches off the power fron your country? Russian hackers behind ‘world’s most murderous malware’ probing U.S. power grid https://www.digitaltrends.com/cool-tech/russian-hackers-us-power-grid/?amp Kremlin Warns of Cyberwar After Report of U.S. Hacking Into Russian Power Grid https://www.nytimes.com/2019/06/17/world/europe/russia-us-cyberwar-grid.html →

Encryption won’t work if it has a back door only the ‘good guys’ have keys to | Technology | The Guardian

https://www.theguardian.com/technology/2015/may/01/encryption-wont-work-if-it-has-a-back-door-only-the-good-guys-have-keys-to- This article from few years back is still relevant, because this same stupid idea becomes re-introduced as proposed “solution” in different countries again and again. It’s impossible to overstate how bonkers the idea of sabotaging cryptography is. Use deliberately compromised cryptography, that has a back door that only the “good guys” are supposed to →

LED flashlight battery holder resistance

I had some broked LED flashlights and I thought of using components from them. Especially the compact battery holder that takes three AAA batteries looks useful in other small projects. Those worked OK when lightly loaded. But when I started taking current for a small motor, I could not get acceptable power out of them. →

RAMBleed vulnerability

A team of researchers representing several universities has disclosed the details a new type of side-channel attack: Researchers show with RAMBleed that it’s possible to use Rowhammer-style side-channel attacks to read protected memory. RAMBleed takes Rowhammer in a new direction. Rather than using bit flips to alter sensitive data, the new technique exploits the hardware →

The world’s first winter tyre with retractable studs / Nokian Tyres

https://www.nokiantyres.com/innovation/research-and-development/the-world-s-first-winter-tyre-with-retractable-studs/ This looks as an interesting concept: Nokian Tyres presents the world’s first non-studded winter tyre with studs in connection with the 80th anniversary of the winter tyre. With a press of a button, the driver can bring out the studs to improve the grip of the tyre. When the studs are not needed, they →

Circuit Breaker: Construction, Working, Types & Uses

MCB (Miniature Circuit Breaker), Construction, Working, Types & Uses https://www.electricaltechnology.org/2016/02/mcb-miniature-circuit-breaker-types-construction-working-uses.html MCBs are used primarily as an alternative to the fuse switch in most of the circuits. A wide variety of MCBs have been in use nowadays in all areas of domestic, commercial and industrial applications as a reliable means of protection. Air Circuit Breaker (ACB) →