; (B) relating to domestic or international terrorism (as those terms are defined in section 2331 of title 18, United States Code); or (C) that is a serious drug offense (as defined in section 924(e) of title 18, United States Code). (5) STAR The term STAR means a suspicious transmission activity report required to be submitted under section 3. (6) Suspicious transmission The term suspicious transmission means any public or private post, message, comment, tag, transaction, or any other user-generated content or transmission that commits, facilitates, incites, promotes, or otherwise assists the commission of a major crime. 4. Reporting of suspicious activity (a) Mandatory reporting of suspicious transmissions (1) In general If a provider of an interactive computer service detects a suspicious transmission, the provider, including any director, officer, employee, agent, or representative of the provider, shall submit to the Department a STAR describing the suspicious transmission in accordance with this section. (2) Requirements (A) In general Except as provided in subparagraph (C), a STAR required to be submitted under paragraph (1) shall be submitted not later than 30 days after the date on which the provider of an interactive computer service— (i) initially detects the suspicious transmission; or (ii) is alerted to the suspicious transmission on the platform of such service. (B) Immediate notification In the case of a suspicious transmission that requires immediate attention, such as an active sale or solicitation of sale of drugs or a threat of terrorist activity, the provider of an interactive computer service shall— (i) immediately notify, by telephone, an appropriate law enforcement authority