Windows Defender and most anti-virus solutions do not provide sufficient protection against ransomware.
The best defensive strategy
to protect yourself from malware and ransomware (crypto malware) infections is a comprehensive approach
to include prevention and your best defense is back up, back up
, and more back up on a regular basis
. Preferably keeping a separate, offline backup to a device that is not always connected to the network.
For more suggestions to protect yourself from ransomware infections, see my comments (Post #2) in this topic...Ransomware Avoidance
...it includes a list of prevention tools.Crypto malware
and other forms of ransomware are typically spread through some type of "user interaction
"...opening a malicious email attachment, executing a malcious file, via web exploits
, exploit kits
, malvertising campaigns
and drive-by downloads
when visiting compromised web sites. RDP bruteforce attacks
against servers are also an increasing common malware vector especially by those involved with the development and spread of ransomware.
Just like with anti-virus programs...there is no universal "one size fits all" solution
that works for everyone and there is no single best anti-ransomware
solution to supplement your existing security protection.Security is all about layers
and not depending on any one solution, technology or approach to protect yourself from cyber-criminals. The most important layer is you
...the first and last line of defense
and security is a constant effort to stay one step ahead of the bad guys.