Taking a random selection of the latest Internet-of-Things (IoT) products, Kaspersky Lab researchers have discovered serious threats to the connected home. These include a coffeemaker that exposes the homeowner’s Wi-Fi password, a baby video monitor that can be controlled by a malicious third-party, and a smartphone-controlled home security system that can be fooled with a magnet.
In 2014, Kaspersky Lab’s security expert David Jacoby looked around his living-room, and decided to investigate how susceptible the devices he owned were to a cyber-attack. He discovered that almost all of them were vulnerable. Following this, in 2015 a team of Kaspersky Lab antimalware experts repeated the experiment with one little difference: while David’s research was concentrated mostly on network-attached servers, routers and Smart TVs, this latest research was focused on the various connected devices available on the smart home market.
The devices selected for the experiment were as follows: a USB-dongle for video streaming, a smartphone-controlled IP camera, a smartphone-controlled coffee maker, and a smartphone-controlled home security system. The investigation discovered that almost all of these devices contained vulnerabilities.
A baby-monitor camera in the experiment allowed a hacker, whilst using the same network as the camera owner, to connect to the camera, watch the video from it and launch audio on the camera itself. Other cameras from the same vendor allowed hackers to collect owner passwords and the experiment showed it was also possible for a hacker on the same network to retrieve the root password from the camera and maliciously modify the camera’s firmware.
When it comes to app-controlled coffeemakers, it’s not even necessary for an attacker to be on the same network as the victim. The coffeemaker examined during the experiment was sending enough unencrypted information for an attacker to discover the password for the coffeemaker owner’s entire Wi-Fi network.
When looking at a smartphone-controlled home security system, Kaspersky Lab researchers found that the system’s software had just minor issues and was secure enough to resist a cyberattack. Instead, the vulnerability was found in one of the sensors used by the system.
The contact sensor, which is designed to set off the alarm when a door or a window is opened, works by detecting a magnetic field emitted by a magnet mounted on the door or window. When the door or window is opened the magnetic field disappears, causing the sensor to send alarm messages to the system. However, if the magnetic field remains in place, no alarm will be sent.
During the home security system experiment, Kaspersky Lab experts were able to use a simple magnet to replace the magnetic field of the magnet on the window. This meant they could open and close a window without setting off the alarm. The big problem with this vulnerability is that it is impossible to fix it with a software update; the issue is in the design of the home security system itself. What’s more concerning is that magnetic field sensor-based devices are a common type of sensors, used by a multiple home security systems on the market.
«Our experiment, reassuringly, has shown that vendors are considering cyber-security as they develop their IoT devices. Nevertheless, any connected, app-controlled device, is almost certain to have at least one security issue. Criminals might exploit several of these issues at once, which is why it is so important for vendors to fix all issues - even those that are not critical. These vulnerabilities should be fixed before the product even hits the market, as it can be much harder to fix a problem when a device has already been sold to thousands of homeowners,» - said Victor Alyushin, Security Researcher at Kaspersky Lab.
In order to help users protect their lives and loved ones from the risks of vulnerable smart home IoT devices, Kaspersky Lab experts advise them to follow several simple rules:
1. Before buying any IoT device, search the Internet for news of any vulnerabilities within that device. The IoT is a very hot topic and a lot of researchers are doing great job of finding security issues in products of this kind: from baby monitors to app controlled rifles. It is very possible that the device you are going to purchase has been already examined by security researchers and it is possible to find out whether the issues found in the device have been patched.
2. It is not always a great idea to buy the most recent products released on the market. Along with the standard bugs you get in new products, recently-launched devices might contain security issues that haven’t yet been discovered by security researchers. The best advice here is buy products that have already experienced several software updates.
3. When choosing what part of your life you’re going to make a little bit smarter, consider the security risks. If your home is the place where you store many items of material value, it is probably a good idea to choose a professional alarm system, that can replace or complement your existing app-controlled home alarm system; or set-up the existing system in such a way that any potential vulnerabilities would not affect its operation. When choosing a device that will collect information about your personal life and the lives of your family, like a baby monitor, it may be wise to choose the simplest RF-model on the market, one that is only capable of transmitting an audio signal, without Internet connectivity. If that is not an option, than follow our first advice – choose wisely.