You should be proactive not reactive.
Lock down your credit directly with the 3 main sources. This may be a pain when you try to apply for credit cards, car loans or mortgage, but worth it.
Do not rely on the FICO score reports that are provided from banks and credit card companies.
Do not focus so much on HOW you have become a victim. Look to prevent it.
Use a separate junk email for NON-Financial related things like rewards accounts, subscription services at different business. Anything that is not critical can use this junk email.
Look at using a VOIP or other internet phone number for those accounts. Separate your “digital footprint” real financial matters from those that are not critical.