The survey was carried out via a publicly available search engine that pinpointed computers controlling critical infrastructure.

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According to a recent survey by business networking organization ExecuNet, 90% of recruiters used a search engine to learn more about candidates and 46% of recruiters had eliminated a candidate based on information they found online.

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But the loss seems implicit rather than explicit: Schmidt's search engine firm held at 33%, keeping its customer base steady even as the overall market grew, the survey said.

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