While it isn’t necessarily an argument against Threema’s security, I think it’s important to consider that Threema is owned by a privately held company [1[2]] — Signal is owned by a non profit [3].
Signal Foundation formed in 2018 to support Signal Messenger which originated in 2012. Through the Foundation, we have been able to support Signal’s growth and ongoing operations as well as investigate the future of private communication.
While it isn’t necessarily an argument against Threema’s security, I think it’s important to consider that Threema is owned by a privately held company [1[2]] — Signal is owned by a non profit [3].
References