Software was used to replace standard online ads with ones that the defendants could profit from. The top image shows a Web site as seen on an unaffected computer; the bottom one has been infected.
Federal prosecutors charged seven men with orchestrating a vast Internet scheme that infected more than 4 million computers with malicious software and generated profits through online advertisements.
By JULIA MOSKIN
New apps offer possibilities to the cook that would be impossible with a laptop, let alone a book.
By ADAM LIPTAK
Several members of the United States Supreme Court questioned law enforcement’s use of high-tech devices to trail people in cars.
By STEVE LOHR
An Institute of Medicine report recommended that an independent agency investigate deaths and injuries related to poorly designed, hard-to-use computerized health records.