An increase in high-profile and sophisticated cyber attacks in the United States is pushing the FBI to bolster its ability to fight cybercrime and foster stronger cybersecurity, its director told Congress this week.

The FBI has been called to investigate cyber attacks at Google and Sony in the past week, incidents that shed light on "the ever-present danger from sophisticated Internet attack," FBI Director Robert Mueller said in testimony Wednesday before the Senate Judiciary Committee.

"Along with countless other cyber incidents, these attacks threaten to undermine the integrity of the Internet and to victimize the businesses and people who rely on it," he said.

The hearing, a video of which is available online, was focused on President Obama's request to extend Mueller's term as director until 2013. The director gave an opening statement on threats facing the intelligence organization and how it's working to combat them, and then fielded questions from the committee.

Mueller cited cyber attacks as one of the FBI's top challenges in the next 10 years, and said the agency needs to step up efforts to combat them, something it's currently working on.

"The increase of cyber as a mechanism for conducting all sorts of crimes--and also it being a highway to extracting our most sensitive secrets or extracting IP from our commerce" is a key concern, he said. "We as an organization need to continue to grow the capability of addressing that arena in the future."

In addition to addressing growing cybersecurity needs, Mueller cited other technology-focused priorities of the organization during his testimony. One is the use of the Internet for terrorist cells to communicate, organize, and radicalize new terrorists, something the FBI is aimed at stifling, he said.

"In the age of the Internet, these radicalizing figures no longer need to meet or speak personally with those they seek to influence," Mueller said. "Instead, they conduct their media campaigns from remote regions of the world, intent on fostering terrorism by lone actors here in the United States."

Another concern Mueller said he will continue to work on is his quest for the intelligence agency to expand its wiretapping capability to avoid a problem known as "going dark." The term refers to situations in which the agency has legal authorization to obtain Internet communications but cannot do so in a timely fashion due to a company's lack of technology to get the information quickly and efficiently.

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