S.C. Code Ann. § 15-75-360: Limitations of actions.

(A) An action under this article for:

(1) an unauthorized disclosure may not be brought later than three years from the date:

(a) the disclosure was discovered; or

(b) should have been discovered with the exercise of reasonable diligence.

(2) a threat to disclose may not be brought later than four years from the date of the threat to disclose.

(B) Except as otherwise provided in subsection (C), a civil action brought under the provisions of this article is subject to the limitations on civil actions provided in Section 15-3-530.

(C) In an action under Section 15-75-320(A) by a depicted individual who was a child on the date of the disclosure or threat to disclose, the time limit to commence a civil action specified in this section does not begin to run until the depicted individual attains the age of eighteen.