hi 2 of my friends had Bot and they used safe way for farming like HBrelog and they don't use 7/27 or any way for safe play but they got ban in same time (it happened after new patch 5.4.2) so what is wrong? its means billiz have new system detection for bot ?
Any insight into the dealings of how Blizzard detects bots is hypothetical; as stated, there isn't a branded "safe way" and there is always risk. There are, however, safer ways to bot by not going to an excessive extreme with the tool - attempt to be less conspicuous.
1.) Player reports, 2.) the rise of the Bot Hunter and 3.) the fact that your friends' bans could have been related to infractions/reports/ detections that occurred months ago. Take any of the three answers above or all of them.
4.) The cleanse for new incoming expansion players, they need now to clean their game for possible new clients in few months
Do what other people do with a bit of botting, that's how most don't get banned because if you're like a human then even if you're caught up in a wave then it will look like you don't use a bot but are just online a lot.
2 words: Player Reports. Did the use plugins for avoiding/seeing players who targeted them? If they did not, they were not safe enough. You can NEVER be safe enough to be 100% safe. I lol'd