Unknown on blockchain.info is not botnets, it's mostly other pools that were relayed differently. This has been known for a long time.
Botnets will stop bothering bitcoin when the profit goes away, or they find something more profitable to do with them.
Topic: Are Botnets Afraid of ASICs? - page 2. (Read 2866 times)
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It may just be amazing luck, but "unknown" is getting 49% of the blocks in the last 24 hours. "Unknown" is unknown but assume most of the hashing is done by botnets.
Are they trying to get as much BTC as they can before the difficulty increases? Are they running scared?
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