New CPD bike theft push?

Within the last two days friends have mentioned seeing CPD pulling cyclists over and checking their bikes out to see if it was stolen.  One incident were some bike cops checking the serial number and photographing it for someone riding a carbon fiber bike with high end carbon wheels and clipless while wearing gym clothes and running shoes.  The second was someone getting pulled over by a police cruiser twice while ghost riding a bike to deliver it.  

Is this a new thing? Has the CPD started caring about bike theft and is taking steps to combat it?

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Permalink Reply by Kevin C Dormant on October 13, 2013 at 3:28pm

I don't like the Eagles, but I like this!

h' 1.0 said:

El Dorado, why don't you come to your senses?


You been out ridin' fences for so long now
Oh, you're a hard one
I know that you got your reasons
These things that are pleasin' you
Can hurt you somehow

[snip]

Permalink Reply by El Dorado on October 13, 2013 at 5:09pm

h' are you the bike shop employee? You people have no clue as to bike theft, police responses, ect...Many of you are self described hipsters living the $550 studio apartment dream. You live in inner city neighborhoods thinking it's cool or "up n coming". There is a reason there is a alternative chicago website.  I have never seen a bigger bunch of whiners in my life.

Permalink Reply by Doug Haynes on October 14, 2013 at 6:15am

Hipster Howard....

h' $550 said:



El Dorado said:

h' are you the bike shop employee? You people have no clue as to bike theft, police responses, ect...Many of you are self described hipsters living the $550 studio apartment dream. You live in inner city neighborhoods thinking it's cool or "up n coming". There is a reason there is a alternative chicago website.  I have never seen a bigger bunch of whiners in my life.

Permalink Reply by D on October 14, 2013 at 6:54am

I had a bike stolen from my garage last week.  The garage has an electric opener.  After the theft, the door was open.  Everyone swears that the door was closed earlier in the day.  Some people in my neighborhood think that there is a thief with some type of device to open garages.  When I google for this it seems to not exist.  Garage door openers made within the last 15 years or so use some kind of "rolling codes" that are supposed to be hard to hack.

Has anyone heard of a garage door hacker thief?  I think it's much more likely that somehow the door got left open.

Permalink Reply by Michelle Loomis on October 14, 2013 at 7:15am

I heard about this a while ago. I wish I remember the details but it was something along the lines of 2 or 3 people working together to steal garage door openers and stealing from the same garages multiple times. I forget how they got the the electronic openers.  

D said:

I had a bike stolen from my garage last week.  The garage has an electric opener.  After the theft, the door was open.  Everyone swears that the door was closed earlier in the day.  Some people in my neighborhood think that there is a thief with some type of device to open garages.  When I google for this it seems to not exist.  Garage door openers made within the last 15 years or so use some kind of "rolling codes" that are supposed to be hard to hack.

Has anyone heard of a garage door hacker thief?  I think it's much more likely that somehow the door got left open.

Permalink Reply by Skip Montanaro 0mi on October 14, 2013 at 7:41am

Michelle Loomis said:

I forget how they got the the electronic openers.

The most obvious way would be to grab an opener from an unlocked car. You might not even need to keep it, assuming you can record the code (they used to be set using dip switches) and then program another opener to the same setting(s).

We used to be fairly casual about locking our car in our driveway. Then we lost the radio faceplate (and its remote) as well as toll booth change. We are now much better about locking our car. As with many people, our garage is to cluttered to actually park a car there...

Permalink Reply by Tom Dworzanski on October 14, 2013 at 7:46am

If you're near someone using her garage door opener you can easily capture and replicate the signal.

Permalink Reply by Kevin C Dormant on October 14, 2013 at 7:54am

Bike thefts from September 2010.

Here's something you don't see every day. Thief(s) broke into car on street, retrieved electric garage door opener, opened garage in alley, stole two bikes:

http://chicago.stolenbike.org/node/190386
http://chicago.stolenbike.org/node/190385

Permalink Reply by S on October 14, 2013 at 8:50am


The rolling codes are supposed to prevent that.  The code that's sent changes over time so doing a replay attack is ineffective since the old code that was used is no longer valid.


Tom Dworzanski said:

If you're near someone using her garage door opener you can easily capture and replicate the signal.

Permalink Reply by Tom Dworzanski on October 14, 2013 at 4:10pm

Yea but without serious encryption these systems wouldn't be overly difficult to compromise. Kind of like the good-old days when everyone had a WEP wifi network. Better than nothing I guess.


S said:


The rolling codes are supposed to prevent that.  The code that's sent changes over time so doing a replay attack is ineffective since the old code that was used is no longer valid.


Tom Dworzanski said:

If you're near someone using her garage door opener you can easily capture and replicate the signal.

Permalink Reply by S on October 15, 2013 at 5:41am

I'm not sure where you see the need for serious or any encryption at all.  The rolling codes just depend on the remote and the garage opener having the same numeric seed initially and then using a psuedo-random number generator to generate new random numbers at a predetermined rate.  The whole point is that knowing what the remote sends to the opener doesn't help you after about a second or so since the opener is now using a different code and you need to use that code in order to get it to do anything.  

Tom Dworzanski said:

Yea but without serious encryption these systems wouldn't be overly difficult to compromise. Kind of like the good-old days when everyone had a WEP wifi network. Better than nothing I guess.


S said:


The rolling codes are supposed to prevent that.  The code that's sent changes over time so doing a replay attack is ineffective since the old code that was used is no longer valid.


Tom Dworzanski said:

If you're near someone using her garage door opener you can easily capture and replicate the signal.

Permalink Reply by D on October 15, 2013 at 5:57am

On reflection, I think the guy must have picked the lock on the side door to my garage.  We were only using the "convenience lock," not the bolt.

But, in any event, here is a stolen bike report from my neighborhood with the "brute force attack on garage opener code" meme.  LInk

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