I would think that if they wanted to redact the amount, they should be careful of the entire letter being &quot;personalized&quot;, to be used as a canary trap, as Elon Musk apparently did: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Canary_trap#Known_canary_trap_cases" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Canary_trap#Known_canary_trap_...</a>