Attached is Microsoft's latest password guidance document.
With the application of the guidelines in this document, you should be able to get better overal security without compromising too much of the user-friendly experience.
I got this through the contact form. It's a jargon-free guide to computer and internet security. It provides a detailed explanation on how to properly secure your computer and internet experience, and best of all, it uses simple and understandable language, lowering the bar for everyone to secure themselves against malware, ransomware and other malicious attacks.
Terry Zink, an MVP, wrote a good article about the difficulty most common e-mail filters have at stopping phishing impersonation attacks using simple display tricks.
It's possible for Synology devices running DSM 3 or higher to enable support for NTFS ACL's. This allows Windows-users to set up Security through Windows Explorer itself. Most of the ACL types are supported.
NTFS ACL's have to be enabled for a share through the web-interface: