While I was showering, I was thinking about how parking signs in the UK are operated and how they could be hacked, and I came up with something. What if you could get onto the network which the roadsigns are on? Forget about breaking into the "main system" which controls the signs for a second - let's just say you found a way onto the network. Now, these signs require information to be sent to them in order for them to work, right? Well, this information must travel to the signs in packets - packets can be captured, modified and sent on to their original destination.
If someone could perform a Man in the Middle attack to get in between a roadsign and the control panel, could they intercept packets, modify them to display some lulzy information on the sign, and then send the packets to the actual roadsign?
Comments
You should turn the tap off.
The only problem would be getting onto the network, but I have no idea what security would be like.
I'd imagine those antennas are for short range maintenance. How often are they updated? It could be the case that people go around each one and manually reprogram them.
I seriously doubt someone would go around each one and manually program them as the number of available spaces changes all the time. I also don't think that someone would sit in a control room and manually send out the information to the signs when it can all be done automatically. Hmmmmmmmmm.
It may not even be a closed network, they may send the data over the internet.
That is an awesome idea