randomness_seeding.md

@@ -114,6 +114,10 @@ write on the system partition.
 
 This is WIP on tails/tails#11897.
 
+However, there might be issues with making the seed known, opening up
+for potential known-input attacks on the PRNG. [See this thread for
+details](https://gitlab.tails.boum.org/tails/tails/-/merge_requests/1431#note_230021).
+
 ## Random value stored in an unused sector
 
 We can write a random value in an unused sector (e.g. LBA 34) on first