I don't think so. When someone knows your IP adress they can't do that much stuff. What I would consider dangerous is, by having your IP adress an attacker can:

1. DDoS, is when a hacker floods your machine with packets, making it to slow down your connection or even knocking it off.
2. Hack your router, by knowing IP a hacker might be able to find vulnerabilities in your router. Oh, and a little tip, change the default password.
3. Locate your IP, if you haven't been using a proxy (for instance - Tor), or even a vpn, an attacker might be able to find your location by using an IP tracker tool.

I don't think so. When someone knows your IP address they can't do that much stuff. What I would consider dangerous is, by having your IP address an attacker can:

1. DDoS. Is when a hacker floods your machine with packets, making it to slow down your connection or even knocking it off.
2. Hack your router. By knowing the IP address a hacker might be able to find vulnerabilities in your router. Oh, and a little tip, change the default password.
3. Locate your IP address. If you haven't been using a proxy (for instance - Tor), or even a VPN connection, an attacker might be able to find your location by using an IP address tracker tool.