Some informative and important lists to get informed about the latest malware threats worldwide

Newly Discovered Malware
http://vil.nai.com/vil/newly_discovered_viruses.aspx

Newly Discovered Potentially Unwanted Programs (PUPs)
http://vil.nai.com/vil/newly_discovered_pups.aspx

Security Vulnerabilities
http://vil.nai.com/vil/newly_discovered_vulnerabilities.aspx

Recently Updated Malware
http://vil.nai.com/vil/recently_updated_viruses.aspx

Recently Updated Potentially Unwanted Programs (PUPs)
http://vil.nai.com/vil/recently_updated_pups.aspx