Ethereum Classic is committed to eliminating security breaches.

[Oxumare]

Ethereum Classic suffered at least three 51% attacks in August alone. These attacks even prompted exchanges like OKEx to warn Ethereum Classic that it will remove ETC if it does not raise its security.
Now, ETC has partnered with ChainSafe and OpenRelay in hopes of increasing its defense against 51% attacks. In fact, ETC seems to be a little late for this partnership.

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Is ETC security so vulnerable that it is vulnerable to 51% attack? this can cause investor confidence in ETC to decrease