If someone targets you with them constantly, though, you can contact the police. DoS attacks, however, might not always be illegal because they’re weaker than DDoS attacks.

They can target your network with a DDoS attack because they know your IP address. When the person grabbing it decides to DDoS you (basically, force you offline with cyber attacks).Here’s When IP Grabbing Is Against the Law

However, what someone does with your IP address can become illegal. Your IP address is pretty much public information at this point – just like your street address or phone number. There’s no specific law preventing someone from targeting you with an IP grabbing tool. If they click “More Info” on the right, they can even see your local IP address – the one your device uses on your network. If you access it, they’ll be able to see your IP address (alongside other information) on their end, like this:

It lets them create a link which they can send to you. Well, it’s when someone uses a third-party service to “grab” your IP address. We’ll answer those questions (and more) in this quick five-minute article. Since it’s so important, you have to wonder – is IP grabbing illegal? Is it illegal to track an IP address? Your IP address is how you communicate with the Internet.

Wireshark ip grabber