Less than a week after the release of Google (NSDQ:GOOG)'s T-Mobile G1 smart phone, security experts detected a serious security flaw in its Android operating system that leaves it wide open for hackers to launch drive-by attacks on users' devices. The security vulnerability, detected by researchers at Baltimore, Maryland-based Independent Security Evaluators, follows last week's release of Google's T-Mobile G1 phone Oct. 22, which is powered by the Android operating system. Google's open source Android operating system is designed specifically for mobile phones, many of which are designed with Web browsing, camera and GPS capabilities. Researchers at ISE posted an advisory warning users of the potential security threat that would allow their mobile devices to be compromised or exposed if they visited a malicious Web page.