Ensuring that your computer is safe, private, and secure is easy enough, but doing so will make the computer virtually unusable. Let’s consider some options that help without hindering, at least not too much. In Short Circuits: Windows computers use the New Technology File System, which was new in 1993, but it’s not a good choice for devices that must also be used by MacOS computers or Android devices. • Thumbnail images shown on YouTube can help users decide whether they want to view the program, but all too often the thumbnails are little more than clickbait. There’s a browser extension that will help.