When you’re trying to hire a computer security professional to manage the network for one of the nation’s largest counties, it’s probably not the best idea to advertise to the world the precise digital defenses you have in place to protect the region’s virtual castle. Take, for instance, the following ad posted to business networking site LinkedIn. The hiring employer in this case is Riverside County, Calif., which claims to be the 16th largest county in the U.S. They’re looking for a new chief information security officer (CISO). Here are their requirements, verbatim: “Must have experience with firewalls (PIX/Border Manager), anti-virus (McAfee/Norton), Intrusion Detection/Intrusion Prevention Systems (IDS/IPS), virtual private networks (VPN), remote access systems (RAS), public key infrastructure (PKI), encryption (3DES), digital certificates (Versign, Entrust), routers (CISCO IOS), sniffers (Network Associates), distributed denial of service attacks (DDOS), biometrics, DMZ/Transaction Zones, business continuity planning, auditing, HIPAA and related regulatory compliance requirements,