VoIP and NSA Wiretapping in the Context of Terrorism
Thursday, May 4th, 2006 by NKWMore often than not, I am skeptical of American policy decisions that are justified with appeals to fear of terrorism. This is the case because such debates tend to be driven by appeals to sentimentality rather than sound reason (as several class members deftly pointed out in seminar), and because I believe politicians have exploited this. Nevertheless, I would like to play devil’s advocate this week and examine VoIP technology and NSA wiretapping in the context of being sensitive to concerns of terrorism.
I am torn about VoIP. From a purely technological point of view, I almost certainly think it should be allowed to flourish unregulated. The costs are lower than those of using a dedicated telephone line, and as broadband becomes increasingly ubiquitous, quality concerns should diminish. Furthermore, as I noted earlier in the semester, I think there is inherent flexibility and value from building diverse technologies over a single neutral platform. The ideal platform thus far seems to be the Internet, so I see no obvious reason to artificially keep the phone system separate and highly regulated.
Two aspects of VoIP, however, concern me with regard to issues of public safety. The first is 911 service as discussed in class. I would venture to guess that most people do not know the phone number for their local police or fire station, and it is certainly the case that many children would not know how to respond in cases of emergency. So long as VoIP technology does not allow for geolocation, it will be flawed as a means of primary communication. At the same time, cell phones are already widely used as substitutes for land lines by many young people and while they will connect to a local emergency response center, they also do not have geolocation, so perhaps not much is practically lost with VoIP.
The more troubling aspect is related to one that I brought up in class. Since the Internet is an open network, and operates as infrastructure for VoIP in the same way that the closed private networks of telephone carriers serve as infrastructure for the existing network, the risk of a malicious attack to voice service is much higher. Professor Felten cited some unbelievable statistic in class indicating the high rate of reliability with the existing telephone network. The Internet is certainly less reliable; but more concerning is its frequent vulnerability to being slowed to crawl by malicious worms and viruses. As a vital means of communication, this is dangerous to voice networks. Infrastructure attacks are often discussed as a starting point for terrorist attacks, and this only makes these easier. One could envision, for example, terrorists jamming VoIP lines with a cleverly written worm in advance of an attack.
With respect to the NSA wiretapping discussion in class, I was struck by two thoughts. My first was skepticism with some members of the class that the kind of dragnet searches suspected to be in use cannot really be very effective. On the other hand, the NSA does have vast resources (physical, financial and intellectual), so if they are really investing substantial amounts of money into these efforts, they probably have some understanding of the efficacy. I think that arguments in class premised around the fallibility of keywords searches are entirely misplaced since they grossly underestimate the likely sophistication of filtering algorithms in use.
Personally, I think that oversight is important for an agency like the NSA that operates in such secrecy. Given how many warrants have been approved, it seems unlikely that the oversight hinders functionality of the agency. I would support efforts to accelerate the pace with which the NSA can add new terms and names to their algorithms, since clearly most all requests are approved anyway. I am also of the opinion that the NSA should only need to obtain permission in order to set the filtering parameters on software— I personally have no problem with a computer scanning my communications so long as I have confidence that appropriate oversight is limiting the frequency with which these data get viewed by human agents. In the interests of public safety, I hardly find it unreasonable that some computer will scan some of my correspondence. While opponents often speak of the ‘slippery slope’ and steady erosion of privacy rights, I’m afraid I simply do not see this risk present in this particular case. It seems like a small price to pay for increased national security.