Questions tagged [security]
The security tag has no usage guidance.
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Is EVERY time we power on the computer verified that nothing have been tampered via PUF CRP authentication? By which component? Where are CRPs stored? [closed]
Are PUFs used, EVERY time we power on the computer, to verify that nothing have been tampered (by using CRP authentication)?
Which element performs this authentication? (bios, secureboot, I don't know)...
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How can a designer be sure to authorize only legit ICs? How is performed? How are cloned ICs prevented to be activated?
The above diagram is from the IC Activation (locking/unlocking) slide of Fighting against theft, cloning and counterfeiting of integrated circuits by Lilian Bossuet Associate Professor, CNRS Chaire of ...
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Since JTAG can be authenticated and encrypted, which key is used? I read that Secure Boot is used, but what is the key? [closed]
Since JTAG can be authenticated and encrypted, which key is used? I read that Secure Boot is used, but what is the key? Me, owner of this laptop, how can I know the key to use to access my own laptop ...
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Switch ELECTRICALLY SAFE between 3 resistive loads (16 A each) on a 16 A line
How to switch 3 resistive consumers (heaters), each having a current consumption of nearly 16 A alternate & ELECTRICALLY SAFELY (German standards)?
So that only one of them heats at a time and the ...
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BLE relay to control my garage door - security concerns
I would like to use Shelly 1PM Mini Gen3 to control my garage door. Since I do not have WiFi coverage in my garage I will rely on Bluetooth. However with this setup I am not sure if this Smart home ...
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How can I make an alarm circuit which senses both cutting and shorting the wire?
I have searched Google top to bottom the only circuit which fullfills my requirements is a wire break or wire loop security alarm as shown in figure 1. I soon realised that if the robber shorts the ...
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ESP32 and security
I'm wondering how secured an ESP32 is.
I'd like to use one to read data on a Telnet device which should remain in an offline network for security purposes.
The ESP32 uses an Ethernet connection to ...
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Is there a (legal) wireless transmission solution for my underground parkade anti-theft alarm?
I live on the 4th floor of a low-rise condo building with a concrete parkade beneath. We have a serious problem with bicycle theft -- someone is coming in late at night with an angle grinder, and ...
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Best way to use Driveay alert output (Open Collector NPN)
I'm learning as I go on this project.
I have a beam-break driveway alert that I would like to get the output from on a device like an Arduino or Raspberry Pi and need some guidance on the best ...
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how to determine what chip wire allows BIOS flashing?
how to determine what chip wire/leg allows BIOS flashing?
I want to modify my MOBO to deny BIOS flashing.
I only want it allowed when I really need to write on it.
So, I need to know:
if it is ...
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How safe is it to plug a resistor on a 12 V transformer?
I was thinking about using an old fridge as a seedling cabinet. I am tempted to use the resistor of an out of order pizza oven plugged on a small 12 V transformer to heat the cabinet.
I didn't do the ...
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Securing PCB from illegal redistribution [closed]
I'm wondering if there is a state of the art method for securing a PCB with a microcontroller against copy and illegal distribution.
For example the well known the flight controller SP racing F3 had ...
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How safe is this and should I change it?
I just finished building a project in my house to automate two plugs I installed on the top of my table, but due to laziness I left the ground connections outside the junction box like in the image:
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In this circuit, the light intensity sensor (LDR) only senses 3_2 cm. How can I improve the sensitivity of this sensor to reach 1m?
In this circuit, the light intensity sensor (LDR) only senses 3_2 cm. How can I improve the sensitivity of this sensor to reach 1m?
https://ibb.co/c3X1NRS
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Circuit board inside a charging cable
I am looking for help identifying a circuit board found inside one of the ends of a charging cable that mysteriously showed up on the desk in my home office. The board has the following stamped on it:
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