CERT.at - the National Computer Emergency Response Team of Austria - is searching for vulnerable software-installations within our constituency. The intent is to help the people responsible to close the security-holes. To achieve this , we use masscan or similar tools to detect potentially infected or vulnerable machines on the austrian Internet. We do this only for the purpose of informing operators of vulnerable or infected machines.
The survey identifies itself as CERT.at-Statistics-Survey/1.0 (+http://www.cert.at/about/consec/content.html).