How do I know if my IP address has been hacked?

Could you please elaborate on how an individual can determine if their IP address has been hacked? What are some of the telltale signs that might indicate such a breach? Are there specific tools or methods that can be utilized to detect and mitigate such attacks? Additionally, what steps should one take if they suspect their IP has been compromised, and how can they prevent future hacking attempts? Your expertise in the field of cryptocurrency and finance would be invaluable in providing insights on this matter.