US researchers say they have been able to hack into Gmail accounts with a 92% success rate by exploiting a weakness in smartphone memory.

The researchers were able to gain access to a number of apps, including Gmail, by disguising malicious software as another downloaded app.

Gmail was among the easiest to access from the popular apps tested.

The hack was tested on an Android phone, but the researchers believe it could work on other operating systems.

A Google spokeswoman said the technology giant welcomed the research. "Third-party research is one of the ways Android is made stronger and more secure," she said.

The research is being presented later at a cybersecurity conference in San Diego by academics from the universities of Michigan and California.

Other apps hacked included H&R Block, Newegg, WebMD, Chase Bank, Hotels.com and Amazon.

BBC News