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.


National CSIRTs depending
on our free daily reports, covering 124 countries

4 billion

IPv4 addresses scanned on 42 ports each per day. 220-350 million hosts respond

40 billion

SSL certificates, indexed
 & searchable in our data & analysis clusters