Google recently trumpeted that it now encrypts Gmail messages while shuffling them among its data centers, an extra security layer aimed at thwarting government and criminal snoops, but didn't say if it applies this protection to its other applications. Asked for clarification, the company declined to comment. "We don't have more details to share beyond the Gmail news, but we're always working in strengthening and encrypting across more services and links," a spokeswoman said via email.