Despite another year filled with lessons learned from tornadoes, floods and fires, 30 percent of businesses across the country are still not prepared for the worst-case scenario, according to AT&T's annual study on business continuity and disaster recovery preparedness for U.S. businesses in the private sector. Among the survey findings: fifteen percent believe that their systems currently in place are sufficient; 14 percent believe that the probability of a disaster causing business disruption is small, and 13 percent believe that the probability of a major disaster is small. The survey authors say this suggests that businesses may have a false sense of security. They also state that businesses are not heeding government warnings; of businesses hit by a disaster, only 41 percent take action when the federal or state government issues an alert. This is compared with an even lower figure of 33 percent for those companies that have not been affected before. 2007 AT&T Business Continuity Study.