I have an unbranded Wi-Fi repeater from China. I was reading over the setup instructions and pretty much every sentence had a spelling mistake which has made me worry. The quality isn't so much a concern, but I'm wondering now is it possible for them to have installed some software that will act as a spy on the network and send back sensitive information to the source?
Does a Wi-Fi repeater have the ability to sniff the network data that it is boosting or is it nothing more than a signal booster? It seems as though this device will consume the current Wi-Fi connection and then output the same connection, sort of like a router in bridge mode, but connected wirelessly. Should I be worried that this device could rob my credit card data, or is it safe?