Add ZuriHac trip report to the 2025-q2 report

Author: TristanCacqueray

reports/2025-07-13-Q2-report.md

@@ -44,7 +44,23 @@ the mail address is there if no other appropriate channel exists.
 
 ## ZuriHac trip report
 
-TODO - Tristan
+Members of the team met in person at ZuriHac. We discussed handling
+package namespaces to support external registries as part of the
+advisories we manage (see [issue#240][issue-240]). With the help of
+other attendees, we re-discovered a dependency confusion
+vulnerability in older versions of `cabal-install` (see
+[HSEC-2025-0005]).
+
+The team also discussed long term project ideas to improve the
+ecosystem security.  We have a few lists scattered in our meeting
+notes and we'll collect the ideas in a top level file to be shared
+with the community.
+
+We would like to thank the ZuriHac organizers for the opportunity to
+meet with the other members of the ecosystem.
+
+[issue-240]: https://github.com/haskell/security-advisories/issues/240
+[HSEC-2025-0005]: https://osv.dev/vulnerability/HSEC-2025-0005
 
 
 ## Advisory database