The terrorists who struck Mumbai, India, in November 2008 represent a new breed of tech-savvy militants. Law-enforcement officials face a challenge in keeping pace.

With its Afghan base disrupted and top leaders dead and on the run, al-Qaeda has taken a new tack, seeking to incite others to wage its battles.

The internet has provided terrorist groups a far-reaching portal to publicize their activities. Yet U.S. officials intent on winning over "hearts and minds" are struggling to provide a competing message.

Just as important to the operations that terrorist groups carry out are the websites they use to publicize their activities. Al-Qaeda in Iraq leader Abu Musab al-Zarqawi describes this as "a race for the hearts and minds of Muslims."

Terrorists increasingly turn to the Internet as a means of communication with one another and with the rest of the world. This article describes how terrorists have cultivated the web to suit their needs.

Cybersecurity expert Knake recommends the United States use international forums to promote mechanisms that address security concerns in cyberspace while ensuring the Internet remains open for the free exchange of ideas across national boundaries.

The recently released Annual Threat Assessment warned of cyberattacks and attacks by al-Qaeda, but that doesn't mean al-Qaeda is capable of cyberterrorism, says CFR's Robert K. Knake.

William McCants of Foreign Policy argues that the levelling power of internet search technology has provided a new mass platform for violence - and that Google has failed to seize upon the opportunity to curb it.

Osama bin Laden's top deputy, former Egyptian doctor Ayman al-Zawahiri, is taking questions from his friends and enemies alike on four al-Qaida-sanctioned jihadist Web sites. Providing a one-off advice column is just one way in which the international terrorist organization has adopted Web 2.0.

A report on how blogging jihadists are using the Internet to spread extremism.

RAND Corporation's Bruce Hoffman testifies before Congress about Islamist extremists' use of the Internet to facilitate their activities.

A profile of the infamous terrorist hacker, Irhabi 007, who was arrested in London in the Fall of 2005.

Counterterrorism expert John Robb explains how a software development theory can describe modern insurgencies.