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Coming Thursday 12 November

How to find every company that uses your competitor, part 2: scaling to millions of websites

Nick Timms · being written now

Our first scanner checked a few thousand websites in an afternoon. Now it checks 35 million, every month, and keeps the evidence for every detection. This is everything that changed in between.

In this note
  1. 1Where 133 million company domains come from, without scraping Google
  2. 2When a plain page fetch isn’t enough and you need a headless browser
  3. 3The DNS records that reveal tools no website shows
  4. 4Recheck schedules, nightly accuracy checks and spotting who’s leaving
  5. 5What it all costs to run, down to the Mac Mini
The rest is being written

Out Thursday 12 November

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