Bill BalladBill Ballad has been active in the IT security community since the mid-1990s. He is the co-author and SME for Securing PHP Web Applications (Addison-Wesley Professional, 2008) and wrote the security chapters for PHP & MySQL Web Development All-in-OneDesk Reference for Dummies (For Dummies, 2008). Bill is a senior systems engineer working with mission-critical Windows networks. Read More Read Less