Security professional here. This isn't how security works. When the term "secure" is used, it is relative only to a threat model. Typically these threat models

Security professional here. This isn't how security works. When the term "secure" is used, it is relative only to a threat model. Typically these threat models are implied, but different perspectives, levels of experience and communication barriers often see that this non-precise term causes confusion and mistakes. In the case of cryptography, the implied "security" of a cipher differs wildly across many different properties (the security margin the design, the caveats to its correct use, the modes it is used with, it's likelihood to be implemented properly, etc. One of the properties is how the integrity or confidentiality of the schemes fail to different types of adversaries - and who are trusted parties to the data security layer. All of this is to say that - if our threat model includes intelligence agencies and mass surveillance - the NSA is not able to provide encryption that can be trusted to be secure.