"Bodynet" refers to the use of a series of networked devices to execute malware, allowing outside organizations or personnel to use these devices without the owner's knowledge...
Many of the Internet of Things (IoT) device developers have expressed reluctance to take protective measures when it comes to security features. Some developers even pointed out with conviction that "hackers can't get anything of value from this device!" But if you don't have a network security design, your device is likely to be forced to join the "zombie army". , the so-called "botnet" botnet.
If you haven't heard of it, "botnet" is the use of a series of networked devices to execute malware, allowing outside organizations or people to use the device without the device owner's knowledge. In certain situations, personnel who abuse these devices can cause these networked devices to accept and transmit messages over the Internet. Since the device user never sees these messages (the message is transmitted to the fourth party), this hijacking operation can be performed indefinitely without being discovered.
While abusers (that is, zombie shepherds) may lack interest in a single device, attacking a range of devices may be useful. The two most common uses of botnets are distributed blocking service (DDoS) attacks and spam spreading. A DDoS attack sends a large amount of information to a specific computer, such as a web server, in a short period of time. The goal is to take advantage of the amount of information beyond the processing power of the computer to cause the computer to crash, causing its service to slow down or even crash software that is running on it. Spam propagation allows zombie shepherds to send e-mail messages that cannot be traced back to phishing, or to perform other tricks without being caught.
Traditional botnet enlistment targets are home network routers and personal computers (PCs) that lack security. But with the deployment of IoT devices and their continued decline in security and even no security, zombie herders are beginning to change their acquisition targets. According to a recent survey by Dark Reading, the hacker website revealed a botnet based on the BASHLITE malware series, which has more than 1 million zombies, 96% of which are IoT devices.
If you don't try to improve the security of the next generation of IoT devices, this zombie force can only grow bigger and bigger.
But as many developers claim, the problem is: "The cost of security is too expensive!" Indeed, many traditional security mechanisms and algorithms require computing resources beyond the reach of small IoT devices. In addition, these mechanisms and algorithms are not effectively simplified to accommodate resource constraints. Although it seems expensive to add security to your design, think about the cost of losing security! Many companies have failed to sell products, damage their reputation, and sometimes have to initiate multi-million dollar recalls because of the lack of security in their IoT design. If zombie shepherds build and release botnets based on your unprotected design, everyone has to pay the price.
Soon, the cost may no longer be a problem. Many solutions have been introduced in the market to solve security problems in microcontroller-based (MCU) designs for less than $1. There are still many people defining and developing software security methods for resource-constrained IoT devices. For example, Eclipse has embarked on a project to create a C library for Datagram Transport Layer Security (DTLS) built into a small design and call it TInydtls. The National Institute of Standards and Technology (NIST) is also developing a plan to aggregate and standardize lightweight encryption algorithms.
In summary, developers who plan to build new IoT devices can at least not underestimate security issues, and now must start thinking about this as seriously as considering each design compromise. It is ideal to ensure a certain level of security in the design specifications and to reserve an appropriate budget for the project, even if it is not a full encryption scheme. At least some protection must be provided at design time, and the product cannot be easily turned into a zombie.
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