Marketplace Fairness Act: The Senate voted Monday to pass the Marketplace Fairness Act by 69-27, but now the Internet sales tax bill faces a tougher challenge in the House.

After the Senate passed the measure, which would empower states to collect sales taxes for out-of-state purchases made online, House Judiciary Committee Chairman Rep. Bob Goodlatte (R-Va.) criticized the lawmakers as moving too quickly on the bill.

“Consideration in the House will be more thoughtful,” Goodlatte said in a statement,referring to the Senate’s decision to vote on the bill without holding hearings first.

He said that his committee will consider legislation and will look at alternatives and issues such as whether the bill creates problems for businesses having to deal with tax codes from multiple jurisdictions.

WTOP, Federal News Radio Web sites hacked: The Web sites of WTOP and Federal News radio were hit with a hacking attack on Monday night that could infect the computers of those who visit the stations’ Web sites. WTOP confirmed the attack on Tuesday morning.

John Meyer, the director of digital media for the stations, said the virus affected some of the computers of people who visited the site using Internet Explorer, and WTOP.com is blocking site access for those using that browser.

A statement posted on WTOP’s Web site said that users who have visited through Internet Explorer in the past 36 hours should “perform a malware scan to check for an infection” and clean up any anomalies they find. The statement said that visitors using Chrome, Firefox or Safari browsers should not be affected.

“We are working diligently to contain and stop the attack, and apologize for any inconvenience this has caused,” the statement said.

Meyer said similar measures are being taken for FederalNewsRadio.com.

Pentagon: Chinese government is behind cyberspying: The Pentagon said Monday that the Chinese government and military are behind cyberspying campaigns. According to The Washington Post, this is the government’s most direct public accusation against Beijing.

The Chinese government has denied that it has conducted or condoned hacking attacks directed at the U.S. government and corporate networks.

Data tracking slowdown?: Data is being collected at slower rates after a spike in growth, according to a report from the Wall Street Journal, suggesting that Web site publishers may be trying to thwart tracking technologies.

The report cites a study from Krux Digital that says an average visit to Web sites popular in the United States collected 42 instances of data, as opposed to 50 instances in the previous year. That figure is still up from the 10 data collection instances in 2010.