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.

7,000

Vetted network owners who rely
on our free daily reports

90+

different data sets generated through full daily Internet-wide IPv4 scanning

3.7 billion

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