#1 Hacked Clients [or Modified Clients]
All types of modified clients, that deviate gameplay functionally in any way from the original Terraria client; this also includes using 3rd party programs, such as Inventory Editors, to modify your character to possess impossibilities, but texture packs are exempt*. Warnings may be given, however due to the nature of the people using these clients, warnings may not be required, and in cases where this affects other players in a negative way, to a degree of selfishness, then the ban may not be appealed.
People using any sort of Modications for PvP Advantages are deemed worse. Therefore, they should not be warned and instead banned.
Did this affect anyone?
Not exactly as no one was on PvP at the time (unless you count him not-so-humbly bragging in chat as disturbance).
Around 6:30 (GMT +7)
Sorry I can’t screen record, I’m not sure exactly how to upload a video (plus I don’t know what program to use). Basically, he won’t receive damage from the Moon Lord. In screenshots and in-game he is at full health consistently despite being hit by multiple eye-laser-thingies.