Madrid ( CNN ) -- The death of Osama bin Laden `` is not the death of terrorism , unfortunately , '' U.S . Homeland Security Secretary Janet Napolitano told CNN at an international security conference Thursday . Al Qaeda has been reaching out with `` English-language publications and the like , '' prompting an increase in the number of individual potential terrorists , she said . U.S. counterterror strategy now includes both `` widening our borders '' by preventing potential terrorists abroad from boarding planes to the United States as well as dealing with `` this growth of homegrown extremism , '' she said . Napolitano was speaking a day after President Barack Obama 's counterterror adviser outlined key points of the new strategy . John Brennan called it `` the first counterterrorism strategy that designates the homeland as a primary area of emphasis in our counterterrorism efforts . '' `` We are doing everything in our power to prevent another terrorist attack on our soil ... it 's not enough to simply be prepared for attacks , we have to be resilient and recover quickly should an attack occur , '' he said . Napolitano is in Spain to discuss terrorism and security with the interior ministers of France , Germany , Italy , Poland , Spain and the United Kingdom . CNN Senior Producer Carol Cratty contributed to this report .
The United States still needs strong anti-terror strategies , she says . The strategy includes measures abroad and at home . It 's the first time the homeland has been the primary focus , a top official says . Obama 's counterterror adviser outlined key points on Wednesday .