@signalapp Why Signal does not publish those formal audit reports?
Wiki page https://community.signalusers.org/t/overview-of-third-party-security-audits/13243 only contains research papers. There was a TextSecure audit https://www.fox-it.com/be/research-blog/working-with-the-open-technology-fund/ and some evidence that in 2018 Signal paid Doyensec LLC., but no audit reports published.
For comparison, WhatsApp publishes its security audit reports and Wire published some (but not all): https://codeberg.org/kuketzblog/www.messenger-matrix.de/issues/40
Briar, Threema, Delta Chat, Session, SimpleX Chat all published at least some audit reports.