Years back a former girlfriend came back from work mightily irritated with her boss and co-workers. She was annoyed that they had gotten angry with her. All she had done was to clean up the mess in their network folders. When I asked what happened, she told me all she had done was to go through all their folders and rename each file to get rid of the incomprehensible bit at the end of each file name. She had noticed that 'it' came up with a strange warning. But that was incomprehensible as well so she didn't pay any heed! She really thought it very unfair that everybody had gotten so upset with her. A little real story as an example where hidden file extensions would have been a good thing. (PS: She was very good looking!)

As far as I know, LogMeIn is the company that started out with the Hamachi VPN (which is still one of the LogMeIn products). As such I believe that LogMeIn is extremely well founded when it comes to security and encryption. I also believe that LogMeIn uses 256 bit encryption. So for me the security of the LogMeIn solution is as good as it gets. But of course the entity that owns the computer you want to remote and the network where it resides (you, your mom, or the administrator where you work) will have to totally trust a third party (LogMeIn) not to cheat on you behind the scenes. I live abroad but work for customers at home (Denmark). I use LogMeIn (pro) extensively and I am very satisfied and happy with it. Whether I am able to use LogMeIn at all depends on the security policies by the Customer. Some don't mind, but others - like banks or other financial institutions: Forget it! Try anything like that and you're out on your ass in a split second. For private use - well I personally have no problem trusting LogMeIn as a company so I use LogMeIn just about everywhere.