While some technologies are still only dreams, others are beginning to make commercial advances. Here's a (by-no-means complete) sample of companies using new techniques to help CSOs do their jobs.ArcSightEntercept Security TechnologiesInternet Security SystemsOkenaSana SecurityTeroswww.arcsight.comThe company offers a suite of tools intended to let security personnel analyze and manage threat data through a consolidated interface. www.entercept.comIntrusion prevention product maker combines signatures with "behavioral rules" to detect and stop attacks. Acquired by Network Associates in 2003.www.iss.netISS's Proventia product line will be able to help users create everything from firewalls to virus filters to intrusion prevention systems to as-yet-uninvented tools in the future. www.cisco.comAcquired by Cisco Systems, Okena's products detect and block potential attacks without the need for constantly updated digital signatures. www.sanasecurity.comIf a previously "normal" application behaves abnormally, Sana's Primary Response can warn administrators of potential problems and block attacks for which patches may not yet exist. www.teros.comThe Teros Secure Application Gateway promises to block a variety of Web-based attacks while "cloaking" machines to hide them from attackers.