A number of articles include a Shields rating - from 0 to 5.
|Not secure, or does not apply.|
|No programming required to break this security, and/or security through obscurity.|
|Needs a little more effort or knowledge - but readily available via research.|
|Moderate effort to break security, or may have known issues that can be patched.|
|Pretty good. Would require a great deal of knowledge/effort to break security.|
|As secure as it can be. Nothing is impenetrable, but this is the state-of-the-art for this context.|