memory wipe

[grugq]

https://tails.boum.org/blueprint/more_efficient_memory_wipe/

steal something from either TAILS (above) or Liberte Linux, to wipe the memory on shutdown... this is, again, not a high priority. There are no public tools for dumping RaspberryPi RAM from a cold boot (trivial to solve), but more importantly there isn't much need for this.

[securedmh]

Also comments here
https://tails.boum.org/contribute/design/memory_erasure/