 A different attack was used against Comodo, a certificate authority, that resulted in forged certificates that were directed at high-profile communications websites.This necessitated an emergency patch to major browsers.These certificates were actually issued from a trusted Certificate Authority, and therefore a user would have had no warning if they had gone to a faked website, in contrast with the Syria incident, where the certificate was crudely forged, including substituting Alto Palo, for Palo Alto.