Ricochet app recently underwent an independent security audit.
"Now, one program designed to tackle that problem head-on has passed its first professional security audit, signaling that it is on the right track for wider use. Ricochet, which is available for Windows, Mac and Linux, announced the audit results on Monday.
“They had very positive things to say about code quality and security overall,” John Brooks, the program's maintainer, told Motherboard in a chat using Ricochet. The audit was carried out by cybersecurity company NCC Group, and financed by the Open Technology Fund's (OTF) 'Red Team Lab' project. Ultimately, the OTF is funded by US Congressional appropriations."
https://motherboard.vice.com/read/ricochet-encrypted-messenger-tackles-metadata-problem-head-on
"Now, one program designed to tackle that problem head-on has passed its first professional security audit, signaling that it is on the right track for wider use. Ricochet, which is available for Windows, Mac and Linux, announced the audit results on Monday.
“They had very positive things to say about code quality and security overall,” John Brooks, the program's maintainer, told Motherboard in a chat using Ricochet. The audit was carried out by cybersecurity company NCC Group, and financed by the Open Technology Fund's (OTF) 'Red Team Lab' project. Ultimately, the OTF is funded by US Congressional appropriations."
https://motherboard.vice.com/read/ricochet-encrypted-messenger-tackles-metadata-problem-head-on