Imagine if 60 Hudson and 111 8th were to go down at the same time? Finding means to mitigate this threat is not frivolously spending the taxpayer's money, IMO; although perhaps removing fiber maps is not the best way to address this.
No, removing fiber maps will not address this problem now that you have pinpointed the addresses that they should attack. Separacy is the key to addressing this problem. Separate circuits along separate routes connecting separate routers in separate PoPs. Separacy should be the mantra, not obscurity. End-to-end separation of circuits is how SFTI and other financial industry networks deal with the issue of continuity in the face of terrorism and other disasters. In fact, now that trading is mediated by networked computers, the physical location of the exchange is less vulnerable to terrorists because the real action takes place in redundant data centers connected by diverse separate networks. Since 9-11 was a direct attack on the financial services industry, people within the industry worldwide, have been applying the lessons learned in New York. Another 9-11 is simply not possible today. --Michael Dillon