Markey letter: In a letter to several of the nation’s top wireless carriers, Rep. Ed Markey (D-Mass.) asked the companies to explain how they use and share consumer data with law enforcement officials. The letters, sent to U.S. Cellular, Sprint, T-Mobile, Leap Wirelss, Metro PCS, Verizon, AT&T, C Spire and TracFone, ask how many requests each carrier has received and what criteria they use to determine whether to approve the requests.

Facebook privacy: A study from Consumer Reports has found that roughly 28 percent of users share all, or almost all, of their wall posts on the social network with an audience that extends beyond their immediate friends. Not only that, many share information such as what day they are leaving on trips or include information on their birth date or year on their profile.

According to the report, 13 million Facebook users say they do not use the site’s privacy controls at all.

Rockefeller asks British panel for phone hacking info:Sen. Jay Rockefeller has written to British politician Lord Justice Brian Leveson asking whether his inquiry into the British phone hacking scandal has found any violations of U.S. law or any evidence of interaction with U.S. citizens.

In the letter, Rockefeller said that he would like to know whether News International or any other News Corp. business “used hacking, bribing or other similar tactics when operating in the United States.”

Maryland law forbids Facebook snooping: Maryland’s Gov. Martin O’Malley signed into law Thursday a bill that would forbid employers from asking current or prospective employees for their Facebook passwords, The Washington Post reported.

Other state, including California, Illinois and Michigan, have proposed similar legislation.

The Maryland Chamber of Commerce had opposed the bill, saying that businesses have a “myriad of legitimate interest in knowing what their employees or applicants have posted about themselves,” the report said.

FCC vote planned for Monday?: Now that Sen. Chuck Grassley (R-Iowa) has lifted his block on Federal Communications Commission nominees Jessica Rosenworcel and Ajit Pai, Sen. Jerry Moran (R-Kan.) has said on his Twitter account that a vote could come as soon as Monday.

Grassley had placed the hold on the nominations because he wanted more information on the agency’s actions regarding the broadband firm LightSquared.

He said late last month that he will stop blocking the confirmation, after receiving the documents he requested from the House Energy and Commerce Committee.