justification for the subsequent delay to the Secretary of Homeland Security before the subsequent delay begins. (ii) Federal Bureau of Investigation If the Federal Bureau of Investigation instructs a covered entity to delay notification under this section beyond the 30-day period under subparagraph (A) (referred to in this clause as subsequent delay ), the Federal Bureau of Investigation shall submit written justification for the subsequent delay to the Attorney General before the subsequent delay begins. (3) Law enforcement immunity No cause of action shall lie in any court against any Federal agency for acts relating to the delay of notification for national security or law enforcement purposes under this Act. (g) General Exemption (1) In general A covered entity shall be exempt from the requirements under this section if, following a breach of security, the covered entity reasonably concludes that there is no reasonable risk of identity theft, fraud, or other unlawful conduct. (2) Presumption (A) In general There shall be a presumption that no reasonable risk of identity theft, fraud, or other unlawful conduct exists following a breach of security if— (i) the data is rendered unusable, unreadable, or indecipherable through a security technology or methodology