I ran TCPdump on my Macbook and saw a lot of communication going back and forth between 10.239.68.143 and compute-1.amazonaws.com. I looked up my private IP address with
ifconfig and found that that address is indeed mine and not someone else's. I also did a Google search on compute-1.amazonaws.com and it looks like it's an adware that infects certain web pages. Apparently whenever I have certain web pages open, those pages are sending messages back to the amazonaws server.
I would like to understand this adware better. I want to understand how to get rid of it, but I also want to understand how it works. What exactly is it doing, and how can I tell which page it is that's infected? What is this adware? Is it basically a virus that infects web pages? Also, is there any way of knowing where the adware came from, how it got on my computer?