Hacohen said that hacking is a criminal act against citizens and the Israeli authorities have begun a criminal investigation, including a computer forensic probe to search for electronic evidence in an attempt to locate the group.

CNN: Hackers attack two Israeli websites

The Texas state attorney general's office said its parallel probe of Google's search-engine practices, which includes other states such as Ohio, would continue.

WSJ: Behind Google's Antitrust Escape

Instead of dispatching a young soldier to probe for a mine or search a cave, a commander these days often sends in a small robot.

WSJ: In the Afghan War, a Little Robot Can Be a Soldier's Best Friend

Last spring, federal antitrust regulators launched a broad civil probe into whether Google has abused its dominant position in search advertising.

FORBES: Government Investigations of Google Pile Up

Academics are increasingly using new technologies at their disposal to search for innovative ways of investigating historical material to enable us to probe new questions and find alternative patterns of investigation.

ENGADGET: British Library and Google Books partner up to digitize 250,000 out-of-copyright works

Within the FTC, Mr. Leibowitz over the fall told several parties that the Web-search case against Google would be hard to win, according to the people familiar with the probe.

WSJ: Behind Google's Antitrust Escape