Jerry Chou Bill Lin Subhabrata Sen Oliver Spatscheck Proactive Surge Protection: A Defense Mechanism for Bandwidth-Based Attacks. 123-138 2008 USENIX Security Symposium http://www.usenix.org/events/sec08/tech/full_papers/chou/chou.pdf conf/uss/2008 db/conf/uss/uss2008.html#ChouLSS08