After Yahoo (YHOO) reported that over 500M of its accounts had been hacked, SunTrust analyst Robert Peck thinks that the news is probably not a material adverse change, or MAC, that would jeopardize the company's acquisition by Verizon (VZ). He notes that the sales contract says that a MAC will not be triggered by "any failure by Yahoo to meet its internal or published projections, budgets, plans, or forecasts of its revenues, earnings, or other financial performance or results of operations." The analyst says that the hack "may be manageable," since a majority of the victims could be e-mail users who are sticky. He keeps a Neutral rating on Yahoo.