Here you can find some websites which mantain collections of malware analysis tools and utilities.
Microsoft uses telemetry – remote data collection – in Windows 10, to study how users interact with the product. Free tools are available for deactivating data collection (telemetry) in Windows 10.
ShutUp10: “O&O ShutUp10 means you have full control over which comfort functions under Windows 10 you wish to use, and you decide when the passing on of your data goes too far. Using a very simple interface, you decide how Windows 10 should respect your privacy by deciding which unwanted functions should be deactivated.”
Use at your own risk! If you are unsure about what you are disabling or whether you need certain configurations, better you do not mess around with those settings.
If you want to learn more about computer security, we recommend reading some Blogs of Security Vendors and Analysts. We have provided links to the blogs of popular antivirus manufactucturers and security writers.
The following sites aim to provide public links to malicious URLs for free to security professionals and enthusiasts. Naturally we advise caution when opening any of the URLs listed there, although not all are necessarily suitable for e.g. testing anti-malware products (as some of those URLs appear to be PUA, extinct, non-working, etc., but some AVs tend to block such sites anyway as they know that some users may use them for testing). The few ones below are the most known free resources and among the better ones.