The legal definition:
A type of defamation. Slander is an untruthful oral, written, or published statement about a person or entity that harms the person's or entity's reputation or standing in the community. Because slander is a tort (a civil wrong), the injured party can bring a lawsuit against the person who made the false statement. If the statement is made via broadcast media -- for example, over the radio or on TV -- it is considered libel, rather than slander, because the statement has the potential to reach a very wide audience.
If it's true, than it's not slander. Of course, this doesn't mean you won't get sued.