Home Depot says it is working with law enforcement to investigate "some unusual activity" related to customer data. The possible breach could affect more than 2,000 stores nationwide. (Reuters)

Home Depot investigating possible security breach "Home Depot said on Tuesday it is investigating a possible security breach of its customers' data," reports The Washington Post's Sarah Halzack. "Spokeswoman Paula Drake said in a statement that the retail giant is 'looking into some unusual activity' in collaboration with its banking partners and law enforcement officials."

Apple says hackers targeted celebrity accounts, not iCloud systems "Apple said that its iCloud systems have not been breached Tuesday and that thieves stole celebrity photos from Apple accounts by targeting individuals, rather than by breaking into the company's infrastructure," reports The Washington Post's Hayley Tsukayama. In a statement, the company said, "After more than 40 hours of investigation, we have discovered that certain celebrity accounts were compromised by a very targeted attack on user names, passwords and security questions, a practice that has become all too common on the Internet."

‘Next time it won’t be celebrity secrets,’ warns Democrat on privacy hack "After pictures of Jennifer Lawrence, Kate Upton, Kirsten Dunst and other female stars were posted online this weekend, officials in Congress said that the hack should inspire lawmakers to act," reports The Hill's Julian Hattem. "'Next time it won’t be celebrity secrets but students’ educational records that rain down from the cloud for the world to see,' Sen. Ed Markey (D-Mass.) said in a statement on Tuesday, while expressing support for a bill he wrote with Sen. Orrin Hatch (R-Utah) to protect students’ data held by private companies."

Appeals court clears Yelp of claims that it fixed reviews "A federal appeals court has cleared Yelp of claims that it extorted businesses into advertising on its site by fabricating bad reviews about them," reports PC World's Zach Miners. "A handful of small-business owners filed a class-action lawsuit against Yelp in 2010, claiming it tried to strong-arm them into buying ads by hiding or removing positive reviews, or penning negative ones. The claims had already been dismissed in federal court, and the court of appeals on Tuesday upheld that decision."

First U.S. appeals court hears argument to shut down NSA database  On Tuesday, ACLU lawyers tried again to argue their case to stop mass surveillance by the U.S. government making their case to "a three-judge panel on the US Court of Appeals for the 2nd Circuit," reports Ars Technica's Joe Mullin. "ACLU v. Clapper is one of two cases challenging mass surveillance that are now headed to appeals courts. The other case, Klayman v. Obama, was filed in Washington, DC federal courts just one day after the surveillance revelations. In that case, D.C.-based U.S. District Judge Richard Leon ruled that the NSA's spying technology was 'almost Orwellian' and likely unconstitutional."