Shadowserver works with national governments, network providers, enterprises, financial and academic institutions, law enforcement agencies, and others, to reveal security vulnerabilities, expose malicious activity and help remediate victims.

1.9 billion+

malware samples in our malware repository

3.7 billion

IPv4 addresses scanned on 148 ports each per day (1.07 billion IPv6 on 77 ports). 381 million hosts respond

4-5 million

IP addresses sinkholed per day, across 400 different malware family variants