If you’ve read TaoSecurity Blog for a while, you remember me being a fan of companies like Renesys (now part of Dyn Research) and BGPmon. These organizations monitor #internet-wide #routing by scrutinizing BGP announcements, plus other techniques. (I first posted on the topic almost 12 years ago.)
I am well aware that an organization, from its own Internet viewpoint, cannot be absolutely sure that the other end of a conversation truly represents the ip address that it seems to be. The counterparty may be suffering a BPG hijack.
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