They also mentioned being able to clone a key's chip by attaching to the OBD port with a device and laptop.
Next door neighbour has a Ford ST, the first thing he was advised to do was move the OBD port and hide it away, 99% of them get nicked via OBD port and laptop. It has been broken into twice while in street or carpark but because no access to OBD could not be driven away, he is still worried about leaving it parked anywhere and when at home it always gets put in garage.
Wireless security is a bit of an oxymoron, if something uses radio waves or is connected to internet it is anything but secure (one of the reasons we outwitted the Germans in WW1 and 2 was that we had a properly secure cable network to USA and far flung corners of the empire, Nazis had to use wireless and we could listen in and crack their codes).
My first Civic had an Infra-Red remote, receiver was by drivers rearview mirror in the interior light cluster, you could point it through windscreen or side windows to unlock, not as long a range or 'convenient' as RF remote, but much more secure
After a scare a few years ago where I had a message come up on computer about 'you computer has been encrypted etc.' I read up about internet security (I had a recent image of HD backed up on Acronis, so just restored complete hard drive so no drama) . Rule number one is never use an account with admin rights to access internet - this is a mistake a lot of people make apparently and leaves your whole computer vulnerable. Also use a very strong password for admin. I never worry about writing passwords down and keeping them at home in a safe place (I keep mine on a USB stick in a password protected file, so only need to remember one password, and only need to plug it in occasionally when i forget an obscure password, after which it is unplugged from computer so cannot be seen online) may be different if you need to keep them from teenagers at home). The main threat is online not from a member of your family, and if some scrote breaks into your house, having them find your passwords may be the least of your worries.