Inside a government computer attack exercise

Government officials are trying to defend against cyberattacks that focus on the computers systems that control key parts of U.S. infrastructure, such as chemical plants.<div class="feedflare"> <a href="http://rss.cnn.com/~ff/rss/cnn_tech?a=-pVyUuJjnaI:_s3qvGKpNNU:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/rss/cnn_tech?d=yIl2AUoC8zA" border="0"></img></a> <a href="http://rss.cnn.com/~ff/rss/cnn_tech?a=-pVyUuJjnaI:_s3qvGKpNNU:7Q72WNTAKBA"><img src="http://feeds.feedburner.com/~ff/rss/cnn_tech?d=7Q72WNTAKBA" border="0"></img></a> <a href="http://rss.cnn.com/~ff/rss/cnn_tech?a=-pVyUuJjnaI:_s3qvGKpNNU:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/rss/cnn_tech?i=-pVyUuJjnaI:_s3qvGKpNNU:V_sGLiPBpWU" border="0"></img></a> <a href="http://rss.cnn.com/~ff/rss/cnn_tech?a=-pVyUuJjnaI:_s3qvGKpNNU:qj6IDK7rITs"><img src="http://feeds.feedburner.com/~ff/rss/cnn_tech?d=qj6IDK7rITs" border="0"></img></a> <a href="http://rss.cnn.com/~ff/rss/cnn_tech?a=-pVyUuJjnaI:_s3qvGKpNNU:gIN9vFwOqvQ"><img src="http://feeds.feedburner.com/~ff/rss/cnn_tech?i=-pVyUuJjnaI:_s3qvGKpNNU:gIN9vFwOqvQ" border="0"></img></a> </div><img src="http://feeds.feedburner.com/~r/rss/cnn_tech/~4/-pVyUuJjnaI" height="1" width="1"/> [More]