Cryptocurrency Hardware Wallets Can Get Hacked Too

Cryptocurrency Hardware Wallets Can Get Hacked Too

Shapeshift fixed a vulnerability in its KeepKey wallet with a firmware update in February.The attack the researchers developed against KeepKey wallets took time to prepare, but with enough planning a hacker could have quickly grabbed a target's PIN in the field.

Hackers Can Mess With Voltages to Steal Intel Chips' Secrets

Hackers Can Mess With Voltages to Steal Intel Chips' Secrets

But by momentarily undervolting a processor by 25 or 30 percent, and precisely timing that voltage change, an attacker can cause the chip to make errors in the midst of computations that use secret data.

The Physics of Heating Up Water with a Battery

The Physics of Heating Up Water with a Battery

With that, I can measure the change in temperature of the water to calculate the change in thermal energy and compare that to the energy produced by the battery.

Need an Ohm's Law Party Trick? Take a Light Bulb's Temperature

Need an Ohm's Law Party Trick? Take a Light Bulb's Temperature

Finally, the resistance is really just a proportionality constant between the voltage and the current measured in units of ohms (often using the symbol Ω). Let's measure current and voltage to determine the temperature of a light bulb.