While the 1933 Act contains an antifraud provision (Section 17), when the 1934 Act was enacted, questions remained about the reach of that antifraud provision and whether a private right of action—that is, the right of an individual private citizen to
sue an issuer of stock or related market actor, as opposed to government suits—existed for purchasers. As it developed, section 10(b) of the 1934 Act and corresponding
SEC Rule 10b-5 have sweeping antifraud language. Section 10(b) of the Act (as amended) provides (in pertinent part): Section 10(b) is codified at . The breadth and utility of section 10(b) and Rule 10b-5 in the pursuit of securities litigation are significant. Rule 10b-5 has been employed to cover
insider trading cases, but has also been used against companies for price fixing (artificially inflating or depressing stock prices through
stock manipulation), bogus company sales to increase stock price, and even a company's failure to communicate relevant information to investors. Many plaintiffs in the securities litigation field plead violations of section 10(b) and Rule 10b-5 as a "catch-all" allegation, in addition to violations of the more specific antifraud provisions in the 1934 Act. ==Exemptions from reporting because of national security==