(CBS) -- A study reveals that all United States nuclear reactors are vulnerable to "credible" terrorist attacks.
The University of Texas at Austin report says all 107 reactors in American are vulnerable to the theft of bomb-grade nuclear materials and sabotage attacks. That included Wolf Creek Generating Station in Burlington, Kansas.
Eleven were named to be most at risk, including Diablo Canyon in California, St. Lucie in Florida, Brunswick in North Carolina, Surry in Virginia, Indian Point in New York, Millstone in Connecticut, Pilgrim in Massachusetts and the South Texas Project. Those eight were deemed unprotected from sea attacks.
Three filled with bomb-grade uranium are also named particularly vulnerable. They are at the University of Missouri in Columbia, the Massachusetts Institute of Technology in Cambridge and the National Institute of Standards and Technology.
The report says some U.S. government nuclear facilities are unprotected because they are believed to be of little interest to terrorists.
The report's co-author Alan J. Kuperman says all the nuclear plants need upgrades.