In a radical departure from earlier statements, Attorney General Alberto Gonzales has said that requiring Internet service providers to <A HREF="http://news.zdnet.com/2100-9588_22-6078229.html?tag=zdnn.alert">save records of their customers' online activities</A> is necessary in the fight against terrorism. Gonzales and FBI Director Robert Mueller privately met with representatives of AOL, Comcast, Google, Microsoft and Verizon last week and said that Internet providers--and perhaps search engines--must retain data for two years to aid in anti-terrorism prosecutions, according to multiple sources familiar with the discussion who spoke on condition of anonymity.