AT&T disagrees with FCC chairman: AT&T said Tuesday that it “disagrees” with remarks from Federal Communications Chairman Julius Genachowski made at the CTIA conference.

In his remarks, the chairman said, “[some] have argued that transactions, let’s be frank — one transaction — is somehow causing a shortage and causing a price change. But the overall amount of spectrum hasn’t changed, except for the amount we've added to it.”

Firing back, AT&T questioned the chairman’s sense of economics, The Washington Post reported. “Basic economics and the law of supply and demand apply to the wireless industry as to all others.  In the case of wireless, without additional capacity, which would have been created by our transaction, prices rise,” said AT&T Senior Vice President Jim Cicconi.

FTC charges MySpace: The Federal Trade Commission on Tuesday charged MySpace for deceiving consumers about its privacy practices, requiring the company to submit to independent privacy assessments for the next 20 years.

The agency alleges that MySpace provided advertisers with information about users’ personally identifying “Friend ID” without express permission from consumers.

Twitter deals with personal data request: Twitter is challenging a court order that requires it to hand over the account information and messages from a man being prosecuted in connection with the Occupy Wall Street movement.

The social network filed a motion in the Criminal Court of the City of New York asking to quash the order, saying that the man, Malcolm Harris, and any other individual user has the right to stop subpoenas directed to Twitter.

The American Civil Liberties Union applauded Twitter’s action, saying that it is a stand for freedom of speech.

Facebook IPO: Facebook is taking its pitch to investors on the road, after pricing its initial public offering in a range of $28-$35 per share.

Chief executive Mark Zuckerberg made an appearance on the New York leg of the tour, dressed in his customary hoodie and jeans, the Wall Street Journal reported. The report said that Facebook executives fielded questions about its mobile strategy, its plans for China and its recent acquisition of Instagram.

RIM hires COO, CMO: Research in Motion has hired two new executives: Kristian Tear will be the company’s chief operations officer and Frank Boulben will be the company’s chief marketing officer.

The appointments come soon after the company outlined its plans for its latest smartphone system, BlackBerry 10, and appointed Thornsten Heins as chief executive officer.

RIM has been losing marketshare to OS competitors Apple and Google, and has had to rethink its strategy since co-chief executives Jim Balisillie and Mike Lazaridis stepped down earlier this year.

Yahoo appoints committee to investigate CEO: Yahoo announced Tuesday that it has formed a special committee “to conduct a thorough review” of chief executive Scott Thompson’s academic credentials.

The three-person committee will be led by Alfred Amoroso, who joined Yahoo’s board of directors in February. Also on the panel: John Hayes and Thomas McInerney, who both joined the board in April, the board announced in a statement.

Thompson has been under scrutiny since activist investor Daniel Loeb fired off a letter to the board last Thursday questioning Thompson’s academic history. Loeb had found that Thompson had been falsely claiming a degree in computer science, though he did earn a degree in accounting.

Tuesday’s announcement said the committee will also review “the facts and circumstances related to the review and disclosure of those credentials in connection with Thompson’s appointment as CEO.”