Looks like we have more to worry about on the Internet than the latest cat videos. Defense Secretary Leon Panetta warned Thursday of the possibility of a "cyber-Pearl Harbor" as a consequence of increasingly vulnerable cybersecurity measures in the United States. Among the institutions on which he claims foreign hackers could wreak havoc are the nation's power grid, transportation systems, financial networks, and even the government itself. But don't worry. The cat videos are probably safe.
