As RFID tags become prevalent in libraries, warehouses, healthcare, and retail, safeguarding the data they carry is more important than ever. RFID tags are fantastic for tracking and automation; however, they present a set of vulnerabilities for data interception, cloning, and unwanted access. In this blog, we'll present the best practices for keeping RFID systems secure and the sensitive data that they manage.
Understanding RFID Security Threats
RFID tags use radio waves to communicate wirelessly and can be subject to several attacks, including:
Eavesdropping: Attackers can place an unauthorised RFID reader within range of an unencrypted RFID environment and eavesdrop on its signals.
Skimming and Cloning: An unauthorised attacker with a portable RFID reader can skim an RFID tag and illegally clone the RFID object in order to impersonate a legitimate object.
Unauthorised Access: There are no access controls around RFID tag readers, which allows an attacker to change the RFID tag object data and behaviour.
Denial of Service (DoS): Denial of service exists against RFID systems when attackers can jam or deny the communication between a legitimate RFID tag and RFID reader.
Recommendations for RFID Security Best Practices
Use Encryption and Authentication
One of the most critical methods to protect RFID tags is to utilise encryption on the data being transmitted. Modern RFID systems tend to employ AES or DES encryption, such that even if the information is acquired while in transit, it will not be decrypted without the appropriate key. Likewise, mutual authentication between the reader and tag provides another method for identity verification before the transfer of data.
Limit Data Stored on Tags
Limit the quantity of sensitive information stored on RFID tags. Instead, utilise tags to point to secure databases where data is encrypted and access-controlled. This limits the chance of data exposure even if a tag is stolen.
Utilise Kill Commands and Password Protection
Most contemporary RFID tags come with a "kill" option that can be used to permanently disable them after application. This is particularly convenient in retail and library environments, where the tags are not required after checkout. Password protection is also necessary to forestall unauthorised writes and reads from the tag.
Shield Sensitive Areas
Physical protection with Faraday cages or electromagnetic blockers can be employed to bar unauthorized tag reading in sensitive regions. This can come in handy where there are sensitive environments like healthcare or classified archives.
Periodically Update and Monitor Systems
Be certain to update RFID middleware and reader software on a regular basis to fix known flaws. Also, log and monitor tag activity to observe malicious patterns that might signify an attempt to breach the system.
Poxo's Approach to RFID Security
In Poxo, security is built into each RFID deployment. Our RFID readers and tags come with encryption and authentication capabilities embedded into them for secure communication. We assist customers in putting secure architecture in place through the integration of access control, data minimisation, and system monitoring specific to their industry requirements.
Whether you're deploying RFID in a warehouse or library, Poxo keeps your data safe from start to finish, so you can worry less about breaches and more about performance.