Major systems are known as “IT investments” in government jargon.

Windows 10 is the latest version from Microsoft, and there are new features in the free Creators Update.

If you do decide to update to Windows 10, you'll have to do a clean installation as there's no way to upgrade and keep your files, settings and programs.

GAO says its estimate of at least $80 billion spent on information technology in 2015 is probably low.

Not counted were certain Pentagon systems, as well as those run by independent agencies, among them the CIA.

Just run Windows Update from your start menu to see if any updates are available.

You'll see Internet Explorer updates listed under "Important Updates." If Windows is set to update automatically, then IE will be kept up to date as well.

Once you've got your browser of choice, keeping it updated is even easier.

Internet Explorer (IE) updates are included as part of Windows system updates, so as long as you keep Windows updated, so is IE.

For most Internet users, your browser is your window to the Web.