The FBI Boston Division said it has announced charges against 30 individuals in what it described as a major global insider trading scheme. According to the source, the case allegedly generated tens of millions of dollars in illicit profits and involves defendants including corporate attorneys and other financial professionals. Insider trading refers to trading securities using material nonpublic information, a market abuse offense that regulators and law enforcement treat as a serious threat to fair price discovery and investor confidence. The source provided no further details on the specific charges, jurisdictions, companies affected, or the identities of the defendants.