A domain name server that has been configured to hand out non-routeable addresses for all domains, so that every computer that uses it will fail to get access to the real website.
An attack which redirects requests - be it network or memory accesses - to a new location defined by the attacker.
Verb
To configure as a sinkhole .
Origin
From Middle English sinkehole, sinkeholl, equivalent to .
Modern English dictionary
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