Cracking a WALNUT

A Novel Physical Attack on Accelerometers

by Bryon Moyer

It’s almost obvious that this would be a problem. Well… part of it is obvious; part not so much.

What do accelerometers do? They measure acceleration – including periodic acceleration, more commonly known as vibration. Any vibration within the designed frequency range is subject to detection.

And what is the most prevalent kind of vibration? Sound. And what’s one really popular way to enjoy sound? Music. Music is sound is vibration. Which can be measured by an accelerometer. (By that measure, you can think of a microphone as a specialized accelerometer…).  Read More


latest news

April 24, 2017

u-blox certifies world's smallest LTE Cat M1 module for Verizon’s 4G LTE network

April 05, 2017

MIPI Alliance Expands Popular CSI-2 Camera Specification Beyond Mobile

April 04, 2017

Leti Announces EU/South Korean Project for World’s First 5G-system Prototype

March 31, 2017

Maximize Battery Run-Times with Maxim's High Accuracy, Low Quiescent Current Fuel Gauge

EEMBC® Benchmark Reveals True Energy Cost of Using Bluetooth® LE for the Internet of Things

March 29, 2017

Argon Design signs up first licensee for Argon360 real-time video stitching IP

March 28, 2017

STMicroelectronics’ Chips Stand Guard in Haltian’s Trackerphone for Children and Seniors

March 14, 2017

STMicroelectronics and ClevX Expand Collaboration, Introducing Highly Secure Encryption-Technology Platform for Device Security

March 09, 2017

LDRA Integration with IBM® Rational® DOORS® Next GenerationProvides Complete Embedded Software Lifecycle Requirements Traceability and Collaboration Solution

March 08, 2017

Microchip Simplifies the Development of Smart, Connected and Secure Solutions with a Hardware Cryptography-Enabled Microcontroller

February 27, 2017

Synopsys Announces Expansion of Liberty Modeling Standard, Paving Way for Ultra Low-Power IC Design

February 20, 2017

mPerpetuo Introduces The World's Fastest Android Cold Boot

February 15, 2017

Aricent and Rohde & Schwarz Cybersecurity unveil a unique bandwidth control solution to enhance customer experience for mobile operators and network equipment providers

February 13, 2017

GLOBALFOUNDRIES Expands to Meet Worldwide Customer Demand

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Imec, Holst Centre and Cartamundi Introduce Plastic Near Field Communication Tag Communicating with Smartphones

Mobile News Archive

Bring Back That Vinyl Feelin'

Consumer Audio Gets Its Groove Back with Cirrus Logic

by Amelia Dalton

Radio FPGA!

Xilinx Announces RFSoCs

by Kevin Morris

Rock & Roll Engineering

MIPI Alliance’s New I3C Interface Looks Set for Stardom

by Jim Turley

Making Your Phone Prettier

New PowerVR 8XE Plus Adds Guts to Previous Glory

by Jim Turley

Solid-State Lithium Battery Renaissance?

Ilika Tweaks the Formula

by Bryon Moyer

Mobile Article Archive

 

Editors' Blog

ARM: We're Turning Japanese

posted by Jim Turley

ARM is getting acquired by Japan's SoftBank for $32 billion in cash. What will happen to the world's most popular CPU architecture -- or the engineers who use it? (18-Jul)

A More Secure Time Server

posted by Bryon Moyer

Time servers allow us to track multiple events from different systems and networks with a consistent time base. But an evildoer can flood such servers with requests, causing crashes. Microsemi has released a new time server that addresses this vulnerability. (13-Jan)

Fancy walking around with urine in your socks?

posted by Dick Selwood

A team at the University of the West of England has used urine driven microbial fuel cells in socks to generate enough current to send wireless signals. (11-Dec)

Free RF Connectivity Tool

posted by Bryon Moyer

Anaren has an online tool for making RF design easy for non-RF folks. They’ve also announced a partnership program for sensros. (11-Aug)

Motion for User Interfaces

posted by Bryon Moyer

Quantum Interface announces their Qi technology. It may look like just more gesture recognition, but it isn’t. (9-Jul)

Mobile Editors' Blog Archive

 

forum

Self-Driving Cars: Unofficial Views

Posted on 04/24/17 at 11:06 PM by TotallyLost

TotallyLost
I would like to propose that any executive team that wants to ship/sell/use self driving cars on public roads, should be willing to submit to a self driving darwin test, where a public sourced gauntlet of worst case tests are constructed for that specific…

Self-Driving Cars: Unofficial Views

Posted on 04/24/17 at 6:22 PM by TotallyLost

TotallyLost
Like most really bad public policy failures, this topic will certainly come down to "follow the money". Most of the strong advocates, also have annual pay checks plus stock/performance incentives highly dependent on approval that are near, or more than, a…

Self-Driving Cars: Unofficial Views

Posted on 04/24/17 at 11:24 AM by bmoyer

bmoyer
What are your views on these and other possible concerns about self-driving cars?

Magnitudes of Mystery

Posted on 04/18/17 at 10:31 PM by kevin

kevin
@dmlee: I'm gonna argue that increasing by zero X works mathematically. If capacity was represented by C, then increasing by zero X would be C+0*C=C

Actually, I claim "10 times smaller" works too, it just doesn't mean what most people who use it intend…

Magnitudes of Mystery

Posted on 04/18/17 at 6:53 PM by dmlee

dmlee
I should hope that my brain capacity has NOT "increased by Zero X".
I would be satisfied if it had increased by Zero % or changed by 1.0 times.

(And don't get me started on expressions like "10 times smaller"!)

I suspect that I have actually lost a…

Mobile Forum Archive

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