(Image credit: Shutterstock / song_about_summer) Cheap smart plugs are a major cybersecurity vulnerability and could easily be used by criminals to break into a person’s devices, or even home, experts are saying. In a blog post, security firm A&O IT Group detailed its security analysis of two cheap and widely available smart plugs - the Sonoff S26 and the Ener-J WiFi. These smart plugs, which can reportedly easily be obtained on Amazon, eBay and Aliexpress for as little as $10, can be used to obtain login credentials to the target’s WiFi network. This was made possible due to the fact that these devices communicate with the router via port 80, sending unencrypted HTTP traffic, as well as due to weak factory passwords.