stanley, 5 months ago

@jasonkoebler Trolley Problem: Would you prevent the runaway train from killing people if doing so meant breaking the Terms of Service?

selfisekai, 5 months ago

@jasonkoebler not sure where you got this emergency brake part from, the train is supposed to release them when you're trying to run it, that's done correctly. the problem here was that, together with releasing the brakes, it wasn't sending power to the inverters, which power the engines.

rysiek, 5 months ago

@selfisekai @jasonkoebler yup.

Here's the full technical talk that goes into all the details:
https://media.ccc.de/v/37c3-12142-breaking_drm_in_polish_trains

And fun fact the ED78-010 train that was celebrating the Broken Compressor Day since December 21st, returned to work on January 1st, as expected:
https://www.rynek-kolejowy.pl/wiadomosci/noworoczny-cud-zepsuty-impuls-sam-sie-naprawil-1-stycznia-116803.html

tubetime, 5 months ago

@rysiek @selfisekai @jasonkoebler oh wow this talk is really good, what a fantastic reverse engineering job!

jasonkoebler, 5 months ago

@rysiek @selfisekai I've corrected the piece, this was my mistake. I dumbly assumed that 'emergency stop' signal corresponded to emergency brakes. Thanks for pointing out

rysiek, 5 months ago

@jasonkoebler thank you!

Also, one more little thing: it's "Newag" or "NEWAG"; not sure where the "NewAg" capitalization came from.

Good piece though, please don't take these little nit-picks the wrong way. Really enjoyed how 404media has been covering this.

@selfisekai

lewiscowles1986, 5 months ago

@jasonkoebler
I Hope those at the top of those manufacturers are going to jail, forever.

Sabotaging the public for profit... If we make it a crime for them, we could get the politicians next...

F*** I said the quiet part out-loud.