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Earlier quoted context omitted.
Exactly. Lots of people don't realize that most of their door locks are there to keep "normal" people out, because dedicated criminals are typically going to find a way in.
Locks keep honest people honest.
Start with 000...0, keep appending the largest digit possible that doesn't produce a code that's already been used and you'll go through all the codes.
Three weeks ago I reverse-engineered my garage door opener wireless protocol. I probed the remote's PCB with a Saleae logic analyzer and found it was a 12-bit code ASK-modulated at 390 MHz with bits encoded as sequences of 10 kHz and 20 kHz pulses. I bought a $13 spare remote to hack it and control the RF transmitter section from my computer through an FT232 sending the ASK signal. I just cut off the digital signal t…
Might as well post a more direct link: http://samy.pl/opensesame/
The "source code" of http://samy.pl is quite interesting /* No source for you! *// /.source.replace(/.{7}/g,function(w){document.write(String.fromCharCode(parseInt(w.replace(/ /g,'0').replace(/ /g,'1'),2)))});
Earlier quoted context omitted.
Criminals use lock picks when you don't want someone to know that they broke in. Most criminals are the "snatch-and-grab" type. They are more likely to look for an unlocked window or just break a window. Oh, and deadbolts are pretty easy to pick.
Or just kick the door down.
The locks did.. nothing. The thieves simply kicked the doors until they splintered at the lock. In fact, one door even snapped clean in half, so it ended up looking like a stable door, with a lower bit no longer attached to the lock which was now opening freely.
I'd wager it took them a similar amount of time to do this as picking a lock would have taken for someone experienced, and with far less training.
It taught me a very practical lesson about security. You can spend a lot of energy engineering the perfect lock, but always be aware that there will likely be obvious (once they've happened at least), perhaps very course, hacks which make that brilliant lock totally redundant.
The parallels to software security are obvious. To loosely quote Richard Campbell, it doesn't matter how strong your password is, if a truly determined bad guy wants to get at your data, they'll just use a wrench ;-)
Three weeks ago I reverse-engineered my garage door opener wireless protocol. I probed the remote's PCB with a Saleae logic analyzer and found it was a 12-bit code ASK-modulated at 390 MHz with bits encoded as sequences of 10 kHz and 20 kHz pulses. I bought a $13 spare remote to hack it and control the RF transmitter section from my computer through an FT232 sending the ASK signal. I just cut off the digital signal t…
Earlier quoted context omitted.
Locks keep honest people honest.
Locks reduce the instances where dishonest people can exercise dishonestly without repercussions. But that's what much of life is about, reducing the occurrences of negative outcomes. Elimination often isn't possible or feasible.
If you consider yourself an honest person, ask yourself how many times you've tried to open doors to random houses as you walk down the street. If you found it unlocked, do you rob the place?
If you need a lock to keep you honest, you may want to reevaluate your values.
Might as well post a more direct link: http://samy.pl/opensesame/
The "source code" of http://samy.pl is quite interesting /* No source for you! *// /.source.replace(/.{7}/g,function(w){document.write(String.fromCharCode(parseInt(w.replace(/ /g,'0').replace(/ /g,'1'),2)))});