I have had OpenDNS set up at my router, working great for a couple years. In the network stats lately I'm noticing what appears to be activity that indicates some malware has infected one of the systems on the network - blocked domains for adware, spam, porn etc. and a surge in requests.
Ive scanned all my systems using avast antivirus free version, malwarebytes, adw cleaner and have found no threats.
What should be my next step in finding the source?
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