The tool is a IP check that checks your active IP against a list of IP's that are doing things that look malicious. Archive: https://archive.today/Hyf4v Direct link to tool: https://check.labs.greynoise.io/ Form the post: There are warning signs that your home network may have been compromised, such as unusual traffic patterns and slowdowns in system performance, but now there's a simple tool to help determine if your router or connected devices are being used to conduct malicious activity. IP Check, from threat monitoring firm GreyNoise, will alert you if your IP address has been observed scanning the internet as part of a botnet or residential proxy network.