Risk of data being stolen by accidentally using a free public smart charging station

There are charging stations for smartphones free of charge at airport waiting stations, etc. However, there is a report saying "The use of charging stations can not be recommended for security".

Please stop charging your phone in public ports - Feb. 15, 2017
http://money.cnn.com/2017/02/15/technology/public-ports-charging-bad-stop/index.html

It was held in San Francisco, USARSA Conference 2017With the security countermeasure companyAuthentic 8Offered a social experiment to provide participants with an AC adapter and a USB cable to provide a free charging station. As a result, it was observed that about 80% of people use the charging station without confirming security in terms of security.

ByMosman Council

But Authentic 8's Drew Park said that public charging stations in airports, conference rooms, parks, etc. should understand that there is a security risk as well as free public Wi-Fi It is. The USB cable used for charging the smartphone is used not only for power supply but also for data transfer Due to the nature of the USB standard, when connecting to a smartphone, there is a possibility that data transmission and reception may be performed without user's permission But people's caution against the public charging station is in a very low situation. In this situation it points out the dangers that a malicious person trying to steal user's data puts a USB cable and a remodeled AC adapter for extracting information to the charging station.

If you use a public charging station, you should charge it with your charger and USB cable using a power outlet, and if you do not have an AC adapter, you can not transfer data by dedicated charging Mr. Park recommends using the USB cable or charging the mobile battery.