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February 2, 2004 (Computerworld) --

Intrusion Detection For Voice Nets

CallKnowing LLC in Sacramento has announced an intrusion-detection service that monitors both private branch exchange and voice-over-IP telephony systems and reports problems. The service monitors the PBX configuration for changes, scans IP-connected devices for possible vulnerabilities and monitors activity on TCP and UDP ports. It also monitors and logs events such as unauthorized changes to stations, failed access attempts, excessive outcalling from voice mail and unusual trunk activity. Reports and alerts are delivered via e-mail and are available on the Web.

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Security Bookshelf



Exploiting Software: How to Break Code, by Greg Hoglund and Gary McGraw; Addison-Wesley, 2004.



This book has a black hat on the cover, and for good reason: It teaches readers how to exploit software and attack systems.



While it's great if you want to delve into the mind-set and tool kit of the black hats, the authors touch only lightly on defensive measures. For example, they repeatedly advise against relying on blacklists to stop bad inputs because they prefer whitelists. That may be good advice, but the authors give no details on how to implement the strategy.



Exploiting Software, clearly written by experts, is perfect for development teams that need to understand the scale of the shared experience ready to be leveled against their software. As a security manager, however, I'm not reassured about the state of my company's current defenses or software infrastructure, since Hoglund and McGraw have shown how to bypass even the most carefully designed security controls. — Vince Tuesday

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Security Log

Developer Tool Kit Raises Backdoor Alarms

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• Security Log
• Developer Tool Kit Raises Backdoor Alarms

• Cellular operators say they're ready for Gustav
• IT workers hit hardest by offshore outsourcing, survey finds
• Psystar calls Apple a 'monopoly' in antitrust charges
• More top stories 

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