A securities lawyer is able to represent their clients when there is a legal dispute with stocks, mutual funds, bonds, and public offerings. A securities lawyer can represent a corporation or person. Often a securities lawyer is going to represent the shareholders when a shareholder feels the corporation has not been honest in the securities. A securities lawyer helps with fraud cases when the officers or directors have conducted fraud against their clients.
A good example of this would be when a person states they can invest money for another person, but they have a ponzi scheme going or they out right steal the money. A securities lawyer can work on getting the funds back for their client and making sure the fraudster is placed in jail.