The issue for me is it's a Chrome laptop, this means the software is Google Chrome. I do not understand why it says it's no longer being updated. In it's like, if you logged in on your PC and chrome said sorry this version of Chrome does not work on your PC. Either I'm not understanding the message, which incidentally, talking here about it has made me realise I need to be specific about the message, and I will do that next time I look at the laptop! But really, I bought a Chrome laptop and I thought it would last for many years. Now I'm in the position like you say, I'm not sure if it's safe and if it might well be attacked.