[333]

[334]

[335]

[336]

[337]

[338]

[339]



[333] Survey by Arbor Networks of 66 self-classified Tier 1, Tier 2, and other IP network operators from North America, South America, Europe, and Asia, 2008.

[334] Courtesy of "Arbor Networks 2008 Worldwide Infrastructure Security Report"

[335] InfoTech Research Group

[337] US-Cert, Vulnerability Note VU#800113. There are several other existing vulnerabilities (CERT Advisory CA-1997-22 BIND, CERT Vulnerability Note VU#109475) that attackers can exploit to poison the cache.

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