Here I took screenshots of a hacker in the act, his ign is XxEnderMaster_xx and he used anti knockback. as you'll see from the screenshots I took them one after the other and you can see he wasn't knocked down as he was supposed to be.

 

Please edit your report and use this forum to report a player for breaking any rule.
Please include:

1. Your ingame name:
2. The offender's exact ingame name:
3. A description of what rule they broke/how they broke it:
4. Evidence/full screenshots.

 

Thank you for the report.
Unfortunately the evidence provided is insufficient.
Should you gain more evidence in the future, do not hesitate to report this player(s) again.

Kind regards,
The Staff