You plan to install smart card readers. smart cards have the ability to encrypt access information12/16/2022 The ESPKey is a mass-produced hardware device built to capture the communications across the wire and store it for later use by the attacker. As seen in Figure 1 – ESPKey, these devices have five wire taps that connect into the wires running between the reader and the controller. The controller is generally located near the doors for which it is responsible, such as above a drop ceiling. ![]() A controller connects to the access control server and stores a copy of valid cards in its internal storage. When a user passes their RFID card over the reader, the attacker’s device copies the signals for later use by an attacker and allows the signals to go to the reader so that a user does not become suspicious by a door suddenly seeming inaccessible.Īnother example of an MITM attack involves placing a small hardware device in line with a card reader and the controller, which is responsible for validating the credentials being read by the card reader. Many times, this hardware device is battery powered and simply placed on top of the legitimate card reader. The malicious device then decodes the information and transmits it to the attacker so they can replay the code and gain access to the building. An MITM attack against an RFID system uses a hardware device to capture and decode the RFID signal between the victim’s card and a card reader. An MITM attack is when an attacker is able to intercept and copy sensitive information between a victim and the victim’s intended recipient of the information. Man-in-the-MiddleĪn attack you may have heard about in the networking world is the MITM attack. The majority of attacks against RFID systems can be broken into three major categories: man-in-the-middle (MITM), cloning, and brute forcing. There are a wide variety of attacks that can be performed against RFID access systems. ![]() In this post, we’re focusing on low-power RFID cards, which are commonly used in door access systems. However, it also makes them an easy target for attackers looking to gain access to a facility. RFID cards are very simple devices, which makes them reliable for everyday use. In this blog post, we’ll discuss the types of attacks that can be performed against an RFID-based access control system, as well as a few ways to protect against such attacks. In a previous blog post, we discussed what a radio frequency identification (RFID) access card is, what the risks associated with RFID cards, how to protect yourself when using access cards and why being careful when using RFID cards is important.
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