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.

4 million

IP addresses sinkholed per day, across 391 different malware family variants

4,100

Vetted network owners who rely
on our free daily reports

4 billion

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