Hack street lights

Cities seeking to save money by installing smarter, automated systems shouldn't assume the equipment is safe. The money a city saves by updating its traffic lights to a more efficient, networked system could be wiped out if a hacker shuts them all down with a flick of a switch. Traffic lights are easy to hack, and they're unlikely to be fixed, according to computer researchers.

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This port is meant to be disabled for build environments but is so commonly left enabled that it has been marked as a vulnerability by ICS-CERT. The real problem, however, is not any individual vulnerability, but a lack of security consciousness in the field. A clear example can be seen in the response of the traffic controller vendor to our vulnerability disclosure.

The industry as a whole needs to understand the importance of security, and the standards it follows should be updated to reflect this. Security must be engineered into these devices from the start rather than bolted on later. Until these systems are designed with security as a priority, the security of the entire traffic infrastructure will remain at serious risk. The configuration software for these radios assumes the default username and password will be used.

If they are modified, the software is no longer able to connect to the device. At an intersection, the radios, controller, and video camera connect to a commercial switch via an Ethernet connection.

The switch does not implement any security features and utilizes its default username and password. Once a potential hacker gains access to a traffic light, he or she can change the light timing, make the lights super short or super long or freeze them permanently. If they robbed a bank and needed their getaway free and open with green lights, they could do that. If they needed to slow down a police chase by getting them stuck in a sea of red lights, they could do that.

Denial of Service A denial of service attack in this context refers to stopping normal light functionality.