On 2022-12-12 this referendum proposal was executed to, among other things, lower the min_untrusted_score to deal with a mass slashing incident in Kusama.

This proposal aims at updating the current min_unstrusted_score in Kusama back to sensible values. The new minimum untrusted score was calculated by averaging the last 30 election scores and halving them (starting from election at block #17416892).

When enacted, this proposal will change the current untrusted minimum score in Kusama from

{
  minimalStake: '1,722,238,583,242,009',
  sumStake: '2,171,296,385,410,646,127',
  sumStakeSquared: '62,184,223,048,402,160,114,561,549,513,680,866'
}

to

{
  minimalStake: '2,957,640,724,907,066',
  sumStake: '3,471,819,933,857,856,584',
  sumStakeSquared: '78,133,097,080,615,021,100,202,963,085,417,458'
}

Why is this change important?

The MinimumUntrustedScore configuration defines the minimum election score that will be accepted by the elections pallet from off-chain staking miners. Increasing the minimum untrusted score ensures that weak election solutions will not be accepted. The proposed election score is more sensible and secure given the current state of the network.