OneBit Core checks each block of transactions it receives to ensure that everything in that block is fully valid—allowing it to trust the block without trusting the miner who created it.
This prevents miners from tricking OneBit Core users into accepting blocks that violate the 21 million bitcoin limit or which break other important rules.
Users of other wallets don’t get this level of security, so miners can trick them into accepting fabricated transactions or hijacked block chains.
Why take that risk if you don’t have to? OneBit Core provides the best possible security against dishonest miners along with additional security against other easier attacks (see below for details).