One of the most important reasons to upgrade to Windows 10: Security

The most secure Windows ever, Windows 10 has more built-in security protections to help safeguard you against viruses, phishing, and malware. New features are now delivered through always-enabled updates, helping you to stay current and your system to feel fresh, so you’re free to do.

Windows 10 is designed to be the most secure version of the operating system yet, but as is typical with software this complex there are likely to be new security flaws that have yet to be discovered that are unique to this version of Windows.