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Initially, it was mostly by monitoring the traffic of users of the alexa toolbar, https://www.alexa.com/toolbar https://www.alexa.com/toolbar I think they move
by lgats 5y ago
Initially, it was mostly by monitoring the traffic of users of the alexa toolbar, https://www.alexa.com/toolbar https://www.alexa.com/toolbar
I think they moved on to more broad data sources, possibly purchasing data from ISPs.
- fragmede 5y agoRead between the lines as to how this similar product from Cisco works. http://s3-us-west-1.amazonaws.com/umbrella-static/index.html http://s3-us-west-1.amazonaws.com/umbrella-static/index.html
- smarx007 5y agoThanks! Goodness, only raised more questions: 1. What is Umbrella? See http://info.opendns.com/rs/033-OMP-861/images/OpenDNS-Global-Network.pdf http://info.opendns.com/rs/033-OMP-861/images/OpenDNS-Global... 2. What is Passive DNS? See https://docs.umbrella.com/investigate-ui/docs/passive-dns https://docs.umbrella.com/investigate-ui/docs/passive-dns