Now we may characterize these two kinds of beings from a more profound point of view. Let us observe the Luciferic beings and see what interests they have in cosmic existence. We shall find that their chief interest is to make the world, and above all the human world, desert [abandon] the spiritual beings whom man must regard as his true creators....from The Mission of the Archangel Michael, Lecture 1
The Ahrimanic [Satanic] beings have a different aim. They have the decided intention to make the kingdom of man and the rest of the earth, subject to their sphere of power, to make mankind dependent upon them, to get control over human beings.
We are the Borg. We will add your biological and technological distinctiveness to our own. Resistance is futile.from Star Trek
After my persistent flash-drive Ubuntu installations started failing periodically (they get stuck in an endless loop during boot-up), I got a whiff of the Borg, i.e. organized Satanism, that hardcore offshoot of the Cult of Isis (33 56 21 56, i.e. 6 11 3 11), a.k.a. Freakish Coincidences R Us (a hint of how closely they're watching us and how utterly they manipulate our lives). Their fingerprints are actually all over Ubuntu, although not to the absurd extent as with Windows. 
But least Ubuntu doesn't make a pretense of constantly updating anti-malware software, which in Windows' case still mysteriously has not managed to address all possibilities, after all these years. For example, just the other day I saw a news article about a woman whose computer had become infested with the "FBI virus" although she claims to have kept her anti-malware software up to date. Note that "FBI" just happens to convert to 6 11, a hint of the virus' Satanic, control-freak roots.
Windows seems to even have an auto-sabotage capability which does not require a computer to be online in order for the operating systems computers owned by certain people to be sabotaged. For example, after getting the HDHomerun running with Windows Media Center, the operating system stopped recognizing the HDHomerun, and repeating the installation process did not remedy this problem. But this only forced me to figure out how to use the HDHR with Ubuntu, and when I did, I found that Ubuntu is superior to Windows for this purpose. So, I don't miss the Media Center, or anything about Windows for that matter (Google Earth would be nice, but Google is supposedly working on an Ubuntu version as of this writing), especially now that I know to what an extreme Microsoft has gone to play games with its customers' heads.
Whenever I boot up in Windows, I can see it searching the hard drive for information to copy to its reserved-for-the-NSA area, and on the rare occasion that I connect to the internet with Windows, it goes nuts with "security updates." But if you put your Windows system hard drive into an Ubuntu computer, you can access pretty much everything without even knowing the password. So much for Windows' "security." Think of Bill Gates with horns, mocking us.
Clearly, despite Ubuntu's supposed low vulnerability to malware and hacking, organized Satanism has given itself a back door through which it can sabotage an installation at will, and in my latest case, the day before the full Moon. But as they probably know, I was prepared.
So, I would recommend avoiding saving any data on the installation-drive (because the data becomes inaccessible when the installation dies - at least I haven't found any way to access it), or at least backing it all up, including your browser-bookmarks and passwords. Also assume that your online activity is being tracked, and that your off-line activity is being saved to your hard drive and uploaded when you're online.
 For example, when I start my hard-drive installation of Ubuntu, it always warns me that a system-software problem has been detected, and demands my password in exchange for specifics. However, I've never noticed any actual indications of a problem with the system-software, and OS updates don't have any effect on this warning. In other words, it's just an attempt to get around what I assume are closely-monitored mechanisms built into the OS to protect the password.