Network device and method for determining security problems in such a network device

The invention discloses a network device and a method for determining security problems in such a network device. To determine if a device (110) is open to the Internet (140), the device (110), storing a statistically unique identifier for the device or a group of devices including the device, sends (S210) a search request comprising the statistically unique identifier to an Internet search engine(150), receives (S220) a response to the search request from the Internet search engine (150), determines (S230) from the search response whether the statistically unique identifier was found by theInternet search engine (150), and in case the statistically unique identifier was found by the Internet search engine (150), performs (S240) an action intended to disable access to the statistically unique identifier from the Internet (140) via the communication interface (113). The device (110) can also update (S250) statistically unique identifier in case the statistically unique identifier wasfound in the search respons