Hi Hans, 

> On 18. Nov 2019, at 04:11, Hans Zandbelt <hans.zandb...@zmartzone.eu> wrote:
> 
> Hi,
> 
> Please find my feedback from page 21 onwards below.
> 
> Hans.
> 
> Overall I would argue there's room for a very concise guidance section that 
> says: do this, don't do that, without explanation, just as a reference for 
> developers; the current text provides in depth analysis but that is perhaps 
> not suitable for developers who just want to know what to do (or not to do) 
> and don't really care about the background/reasoning

While section 4 gives the raw security threat analysis, we tried to summarise 
the actionable guidance in section 3. What do you miss there?

> 
> P21
> first bullet
> "the client has bound this data to this particular instance." -> particular 
> instance of what?

This bullet refers to the note above. 

"Note: this check could also detect attempts to inject a code which
   had been obtained from another instance of the same client on another
   device, if certain conditions are fulfilled:"

> 
> 3rd paragraph:
> "call to the tokens endpoint." -> "call to the token endpoint."

Fixed 

> 
> last paragraph could forward point to the next section by adding something 
> like
> "using one of the mechanisms described in the next section."

Incorporated 

> 
> P22
> 3rd paragraph:
> is the token binding guidance still accurate? it seems to be overestimating 
> the adoption 

You mean this statement? 

"Token binding is
      promising as a secure and convenient mechanism (due to its browser
      integration).  As a challenge, it requires broad browser support
      and use with native apps is still under discussion.”

Thanks,
Torsten. 

> 
> -- 
> hans.zandb...@zmartzone.eu
> ZmartZone IAM - www.zmartzone.eu
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