1.You should avoid clicking on random links come across or downloading attachments from unknown or unexpected sources; it might be on your social media account or through emails.
You can be on your guard, and stay conscious about not clicking random links, but then make the mistake of giving your devices to a someone you consider trustworthy, and they are not as conscious as you are, they make the mistake of clicking random links, and even though they do not nurse the intention of evil towards you, they end up putting you in a difficult position that they do not even know off. If you must give someone you trust your personal device, be sure of their security consciousness.
this is true and sometimes when we consider the different ways we can be caught off guide regarding our asset security you will be tempted to conclude that safety is just of the lord because you cant be too sure of the efficacy of the safety measure you are implementing. there are some anti virus you install and it looks as though it is stealing some vital information from you, the updates we do on our regular apps are becoming too suspicious because we cant tell which is legit and which is not legit. if you want to be too careful on clearing cookies or refusing to give your device to a third part, it also comes with it own issue especially when you have wards around you that might once in a while need to make use of your device for something. i have always recommended that if the resource is available, getting a separate device thats strictly for crypto related transaction is the best thing to do so it becomes easy to monitor these safety measures.