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.

4-5 million

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

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.