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.

9,000

Vetted network owners who rely
on our free daily reports

848,000

Malicious domains sinkholed & blocked in a single botnet takedown operation, 2.5M over 4 years.

2,750

Class C networks hosting honeypots & spampots