<p>WASHINGTON -- Cellphones using Google's (GOOG) Android operating system are at risk of being disabled or wiped clean of their data, including contacts, music and photos because of a security flaw that was discovered several months ago but went unnoticed until now.</p><p>Opening a link to a website or a mobile application embedded with malicious code can trigger an attack capable of destroying the memory card in Android-equipped handsets made by Samsung, HTC, Motorola and Sony Ericsson, rendering the devices useless, computer security researcher Ravi Borgaonkar wrote in a blog post Friday. Another code that can erase a user's data by performing a factory reset of the device appears to target only the newly released and top selling Galaxy S III and other Samsung phones, he wrote.</p><p>Borgaonkar informed Google of the vulnerability in June, he said. A fix was issued quickly, he said, but it wasn't publicized, leaving smartphone owners largely unaware that the problem existed and how they could fix it.</p><p>Google declined to comment. Android debuted in 2008 and now dominates the smartphone market. Nearly 198 million smartphones using Android were sold in the first six months of 2012, according to the research firm IDC. About 243 million Android-equipped phones were sold in 2011, IDC said.</p><p><a href="http://www.mercurynews.com/business/ci_21654360/android-smartphones-at-risk-being-completely-wiped-security">Keep reading...</a></p>