The ultimate defense for slander and libel is truth. As long as Verizon tells the truth, they won't be liable for any damages done to AT&T.<p>However, those damages don't include what AT&T is doing to itself by not investing enough in their network. Just imagine if AT&T had a network as powerful as Verizon and kept a smartphone like the iPhone. I would switch in a heartbeat and they wouldn't have to worry about frivolous lawsuits.