Illinois Statutes Chapter 755. Estates § 5/12-4. When security excused or specified

(a) Except as provided in paragraph (c) of Section 6-13  1 with respect to a nonresident executor, no security is required of a person who is excused by the will from giving bond or security and no greater security than is specified by the will is required, unless in either case the court, from its own knowledge or the suggestion of any interested person, has cause to suspect the representative of fraud or incompetence or believes that the estate of the decedent will not be sufficient to discharge all the claims against the estate, or in the case of a testamentary guardian of the estate, that the rights of the ward will be prejudiced by failure to give security.

(b) If a person designates a guardian of his person or estate or both to be appointed in the event he is adjudged a person with a disability as provided in Section 11a-6 and excuses the guardian from giving bond or security, or if the guardian is the Office of State Guardian, the guardian's bond in the amount from time to time required under this Article shall be in full force and effect without writing, unless the court requires the filing of a written bond.

(c) The Office of State Guardian shall not be required to have sureties or surety companies as security on its bonds. The oath and bond of the representative without surety shall be sufficient.