Interactive maps showing email infrastructure of ~15,300 municipalities in Germany, Austria, and Switzerland, based on public DNS records and network signals.
+Who runs the official email of your municipality, and how well is it protected against fake senders? Interactive maps of ~15,300 municipalities in Germany, Austria, and Switzerland, based on public DNS records and network signals. They accompany our peer-reviewed SecAssure 2026 paper.
Which provider handles each municipality's official email? Classified by jurisdiction: US cloud (Microsoft, Google, AWS), domestic, or foreign.
- - + Open map → +How well are municipality email domains protected against spoofing? Based on SPF and DMARC configuration.
- -Mario Bischof, David Huser, Alexej Ochsner, Ronald Petrlic, Edy Portmann
+Computer Security. ESORICS 2026 International Workshops (SecAssure 2026), LNCS, Springer, to appear
+@inproceedings{bischof2026email,
+ author = {Bischof, Mario and Huser, David and Ochsner, Alexej and Petrlic, Ronald and Portmann, Edy},
+ title = {Email Provider Dependencies and Email Security in Municipalities Across {Germany}, {Austria}, and {Switzerland}},
+ booktitle = {Computer Security. ESORICS 2026 International Workshops (SecAssure 2026)},
+ series = {Lecture Notes in Computer Science},
+ publisher = {Springer Nature Switzerland},
+ year = {2026},
+ note = {to appear}
+}
+ Accepted manuscript. The Version of Record will be available from Springer once published; use is subject to Springer Nature's Accepted Manuscript terms.
+Maps for other countries, derived from the predecessor mxmap.ch.
+Last checked:
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