Set your enemies to dislike: This is always the responsibility of the attacker and can be done as soon as right after logging in or as late as a split second before the actual attack but the bottom line is that it must be done.
There is a hostile button available through the radial menu. It can be quick slotted. Right click->Assign Special Abilities->Class->Hostile. Target an individual to hostile him or her, or target the ground to hostile everyone.
Activities that may be considered an attack:
- Stabbing and/or punching them
- Casting unfriendly spells on them
- Dispelling
- Damaging
- Cursing
- Or any other negative effects
- Pick Pocketing (also see: Pick-pocketing rules)
- Disarming them
- Etc.
The actual setting hostile (going to party list and changing from neutral to hostile) is considered an OOC action. Therefore, let IG actions determine if a character is being "hostile" towards your character, not a mechanical setting and/or red aura with a pointy sword.
If someone sets you hostile and you suddenly start buffing in preparation from 20 areas away from that character, that is metagaming. Don't do it.
Team Discussions:
Setting to Hostile
Attacking npc's and hostile settings
Contact and Hostile
Setting hostile when the PC name is unknown