What could happen if an authority (validator) gets hacked in a PoA consensus?

Would it be able to block the system as it won't be able to mine its block?

1 Answer 1


In reality it depends on the algorithm, as PoA is more of a family of consensus algorithms that run on the same concept of authorized block producers, but generally no. If a block producer misses their turn to produce a block, they're skipped.

  • so there is a time limit for the selected validator to produce a block? in Clique PoA?
    – David
    Commented Nov 13, 2018 at 16:08

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