Los Angeles-based PriceGrabber.com, an online shopping comparison engine, said today that it is in a partnership with ScanAlert's HACKER SAFE, a security certification service. PriceGrabber.com said it will integrate ScanAlert's HACKER SAFE security trustmark into product search result pages. The seals are an indication of security certification of vendors. PriceGrabber.com is a unit of Experian Interactive.