Allegheny County officials are pledging to improve security with its real estate website after a Penn Hills family said a man sharing the same name was able to change the owner's address. Real estate records show Sylvester Ward bought his house on Vantine Street in 2008. Another man, also named Sylvester Ward, in North Carolina was able to change the owner's address on the property through the county's real estate office. That change allowed the house to be listed for sale on Zillow and other real estate websites, even though the Ward family wasn't interested in selling. "Everything you have...