John LeClair

I just gave a talk at Hackfest Quebec on EMFI Fault Injection this past weekend. During that talk, I shared some of my lower cost devices in my reverse engineering arsenal. One such device is very affective and only costs around 10 dollars. What do you have on your reverse engineering bench ?

@MbarkCherguia easy, I have landed at St. Barth in a Twin Otter and a Cessna at least 50x ... in Microsoft flight sim

Can you rate this landing?🛬

@ElectronicsbyJH Someday I need to learn how these butterfly filters work... Coming from an FPGA engineers, I tip my baseball cap to they Analog Engineers.

😎 Delivered today:

@Montreal @evablue Snowy. No mosquitos.

Which version of Montréal do you prefer? 🤓 📷 @evablue #montreal

@davepl1968 I always used a floor jack or scissor jack and piece of 2x6 to do my transmission bench-pressing for me. I needed my hands to keep the rust from the chassis out of my eyes.

If you've never bench-pressed a junkyard Powerglide into place while lying on a frozen, unpaved driveway mid-winter, I'm not sure we can be friends.

@ChShersh Turbo Pascal rocked ! Borland tools were so much better back in the day. OWL was soooo much better than MFC. But alas .... Evil Gates prevailed. #linux

If you recognise this, take care of your knees

@ArchVillequebec Always irritates me seeing the souvenir shops within The Walls with cheap Chinese crap - each with the same items.

@john_leclair Sieur John! Born near my 1608 Habitation, I see. Vex not over the merchants .... Lower Town was ever a bustling hub of trade, though beaver pelts held more virtue than modern trinkets! Even the grand Maison Chevalier must adapt. New France endures!

Voyage dans le temps au cœur du Vieux-Québec ! Découvrez l'intersection des rues du Marché-Champlain et Notre-Dame : un contraste saisissant entre l'effervescence de 1895 et son charme féérique d'aujourd'hui ✨❄️. Lequel préférez-vous ? L'ambiance d'époque ou la magie moderne ? 👇 #VilleDeQuebec #VieuxQuebec #HistoireQC #Quebec #Patrimoine #AvantApres

@CountBiffa @BejoMas11 @RaminNasibov correct ! I am not sure why I spelled it that way. I typically know better. Was a long day yesterday.

@john_leclair @BejoMas11 @RaminNasibov *bupkis maybe? 🤣🤣

I wanna know what idiot at HP thought THIS would be a great place to put a power button??

@felix__augusto @RaminNasibov one would hope and think it was that easy - but as we know - feature creep and bored engineers inject garbage into a design. Hence my desire for a physical power switch.

@john_leclair @RaminNasibov If you need a corrupted OS so much you can just hold the power button for a few seconds and it'll do that

@cqcqcqdx I still have mine when I was very young.

The TRS-80 Micro Computer System (TRS-80, colloquially known as the "Trash-80", a desktop microcomputer developed by the Tandy Corporation and sold through their Radio Shack stores. Launched in 1977, it is one of the earliest mass-produced and mass-marketed retail home computers.

@MbarkCherguia Probably pass out...

Be 100% honest… she’s walking straight towards you in the airport 😏✈️ What’s YOUR actual reaction?

@spacenotfilled @RaminNasibov thinking about it. Vivado sometimes tanks my entire system.

@john_leclair @RaminNasibov That's a really great point. Clearly wouldn't work! You could absolutely hardwire in some form of a killswitch though. Just like we're starting to look for phones with manual kill switches for your data,gps, etc - the same can be said about computing! You just created a market!

@BejoMas11 @RaminNasibov sometimes hold it for 20 seconds. butkiss. I have 3 identical developer laptops running ubuntu

@john_leclair @RaminNasibov Have you tried pressing the power button for more than 3 seconds? My laptop immediately turns off, bypassing shutdown, etc, no drama, just off.

@spacenotfilled @RaminNasibov what if you cannot run the script ? Ie: Ubuntu is super hung ?

@john_leclair @RaminNasibov This can be done very easily. I could write you a simple script that would do this. I bet money if you go into grok and tell it exactly what you just said, tell it your device specifications, and ask it for code for a program to do that - I bet it works. Try it

untrue. In many cases

@My1xT @Booleans_Things @RaminNasibov I actually exaggerated. 😱 I did have a laptop a long time ago that was soldered in. But it might as well be if I have to remove 15 Torx screws...

@john_leclair @Booleans_Things @RaminNasibov soldered? that's unusual, I know them screwed and glued in but soldered is an entirely new beast.

@MouserElec woo hoo .... I am going to catch me a new Rohde & Schwarz !!!!!

How to catch an engineer: Step 1: Place oscilloscope. Step 2: Wait.

@Zackktually @RaminNasibov When Ubuntu (or probably Windows (haven't used Windows in years)) gets massively scrogged - I can hold the power button down on my laptop until practically the end of time before it shuts down

@john_leclair @RaminNasibov What would be the use case for this?

@Booleans_Things @RaminNasibov Battery Soldered in. Desktop yes.

@john_leclair @RaminNasibov You could just take out the battery and unplug it

@kaaaash____ Just give me a Dell XPS. Cheap "replacement" parts on ebay.

Honestly, what is the reason behind Thinkpad's popularity among engineer's?