More than 35,000 software applications for Japanese smartphones are dangerous, according to a study by Netagent Co., a Tokyo-based information security company.

The suspect applications account for a tenth of the roughly 348,000 applications for the Android operating system that the company examined from October to March. The apps were graded as dangerous, high risk, medium risk, low risk and safe.

The study found that some dangerous applications are designed to send a massive amount of text messages promoting dating service websites and to remotely manipulate users' websites to show certain advertisements.

As of March 20, 35,352 applications were found dangerous and 57,481 were confirmed safe.