The security concerns lie in what is actually contained within the RFID and
not necessarily the signal being transmitted. If you were to overwrite the
data on an RFID with malicious code, that code would then execute on the
underlying DB (SQL, Oracle, etc.). Typically, DB programmers working with
RFID inventory systems do not spend a great deal of time (if any) on
security measures. So by simply adding a malicious SQL query or insert ont=
o
the RFID, that code would execute against the DB with the same permissions
as inventory items being processed. Demonstrating the risk to your clients
may be difficult unless you actually test it against their inventory DB.
Also, an open-source software package for editing and abusing rfid tags has
been released:
http://www.rf-dump.org/
Also check out http://www.line56.com/articles/default.asp?ArticleID=3D7439.
--Jason Kratzer
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