Disclosing Illegal Activity on a SF-86 Questionnaire for a National Security Position

I've heard people talk about listing all illegal activities one has ever done that were not known to the police on the SF86 form. I've also heard someone say this is not needed unless you were caught by the police with an arrest or conviction. For example, someone may have illegally downloaded copyrighted material online or not reported a slight scrape against someone's car in a parking lot.

Does the SF86 require voluntary disclosure of all illegal activities for which there is no proof at all? I am referring to non drug related items.

This seems to be a copy of the SF86 form: https://www.opm.gov/forms/pdf_fill/sf86.pdf

You are supposed to answer questions honestly. If you want to answer a question dishonestly because you were involved in a crime but were not arrested, I suggest having a lawyer assist you.

See the information under the heading, "Penalties for Inaccurate or False Statements" in the instructions section of the form.

I did not see a section that required disclosure of either of the two categories I listed.
The categories that appeared to require such disclosure were drug incidents, domestic violence incidents, and hacking incidents.
I wanted to see if there was anything I missed.

You need to read that again. Felonies, Hacking, DV, and drugs need to be reported IF YOU HAVE EVER been arrested, charged, convicted, etc... However, any crime other than traffic violations with fines less than $300 needs to be reported if it occured in the past seven years.

My last statement was in the context of self reporting incidents that ever happened, without a charge or arrest.

My understanding of the form is:
* If you have any charge, arrest, etc, within the last 7 years other than traffic violations less than $300, you must list it.
* If you ever were involved in hacking, domestic violence, drugs, or terrorism, you must self report it, regardless of whether or not you were caught. If you ever had a felony, you must list it regardless of time frame.

Other illegal acts would not need to be self reported according to the form.