This is not quite as bad as what Mediacom, a large US cable ISP is doing on their network. They are modifying TCP in transit to change 404 responses from websi

This is not quite as bad as what Mediacom, a large US cable ISP is doing on their network. They are modifying TCP in transit to change 404 responses from websites into a 200 response with a line of javascript to redirect the browser to their own search engine. They've been receiving non-stop complaints for 2 months and there's still no way to opt-out. A month ago they were caught injecting ad's on top of google.com and apple.com, as well as replacing AdSense on arbitrary websites with their own advertising. http://www.dslreports.com/shownews/Mediacom-Injecting-Their-Ads-Into-Other-Websites-112918 http://www.dslreports.com/shownews/Mediacom-Injecting-Their-...