RFID tags may pose security and privacy risks to both organizations and individuals. Unprotected tags may have vulnerabilities to eavesdropping, traffic analysis, spoofing or denial of service. Unauthorized readers may compromise privacy by accessing tags without adequate access control. Even if tag contents are protected, individuals may be tracked through predictable tag responses; essentially a traffic analysis attack violating “location privacy”. Spoofing of tags may aid thieves or spies. Saboteurs could threaten the security of systems dependent on RFID technology through denial of service.