SAN FRANCISCO — Silicon Valley lobbied hard in Washington in 2012, and despite some friction with regulators, fared fairly well. In 2013, though, government scrutiny is likely to grow. And with this scrutiny will come even greater efforts by the tech industry to press its case in the nation’s capital and overseas.

In 2012, among other victories, the industry staved off calls for federal consumer privacy legislation and successfully pushed for a revamp of an obscure law that had placed strict privacy protections on Americans’ video rental records. It also helped achieve a stalemate on a proposed global effort to let Web users limit behavioral tracking online, using Do Not Track browser settings.

But this year is likely to put that issue in the spotlight again, and bring intense negotiations between industry and consumer rights groups over whether and how to allow consumers to limit tracking.

Congress is likely to revisit online security legislation — meant to safeguard critical infrastructure from attack — that failed last year. And a looming question for Web giants will be who takes the reins of the Federal Trade Commission, the industry’s main regulator, this year. David C. Vladeck, the director of the commission’s Bureau of Consumer Protection, has resigned, and there have been suggestions that the chairman of the commission itself, Jon Leibowitz, will step down.