Keep in mind that Emiru is the largest female content creator on twitch and this still happened.
Edit: The head of security for Amazon and the Head of risk for Twitch initally told her manager that the creep was banned "from the platform for 30 days" and it took them an hour to make it a perma. 
Burn Amazon
Full Article part 1
The streamer also criticized on-site security, alleging that “at least 3 or 4 other TwitchCon security staff in the area did not react and let the guy walk away,” and that staff behind the booth “were joking about how they didn’t even see what happened.”
Emiru confirmed she plans to discuss the event further on stream, and said this will be her final TwitchCon appearance. “I think other creators should seriously consider not attending in the future,” she said. “I did not feel cared for or protected, even bringing my own security and staff.”
You can read her full statement below:
spoiler Emiru
hello everyone, I am okay and thank you for all of the kind messages, sorry I cannot respond to them all 🩷
Yesterday, the man who assaulted me was allowed to cross multiple barriers at twitchcon and even in front of another creators meet and greet to grab me and my face and try to kiss me. Fortunately he wasn't able to, but a lot of people have pointed out it could have been a lot worse!
I'm obviously shaken up by what happened and it's not the first time I've dealt with something like this, but to tell you honestly, I am a lot more hurt and upset by how Twitch handled it during and after the fact.
Like I said, I don't understand how he was allowed to make it to me in the first place. The security in the clip who reacts is my own security (it's true my favorite and usual security guard was banned for holding a stalkers arm to bring him to police, at a past Twitchcon)
However, there were at least 3 or 4 other Twitchcon security staff in the area who did not react and let the guy walk away, as you can see in the clip since they don't even appear in the frame LOL
The woman who is walking me away is my own personal manager, and behind the booth, the only two people who were checking on me and comforting me were her and my friend. None of the Twitchcon staff came to ask what happened or if I was okay.
My friend who was present told me Twitch security were also behind the booth afterwards joking about how they didn't even see what happened and immediately laughing and moving on to talking about something else.
So if no one was checking if I was okay or if I needed anything and they let the guy run away initially, I have no idea what anyone hired to keep the event safe was doing LOL
In Twitch's statement they said that the guy was immediately caught and detained, I'm sorry but that is a blatant lie. He was allowed to walk away from my meet and greet and I didn't hear he was caught until hours after he attacked me, and it felt like this only happened because of my manager pressing for it, not because Twitchcon staff present thought it was a big deal.
I have a lot more I want to say but I will say it on stream later today instead of writing a book on here.
Thank you guys again, sorry you all had to see that. This is definitely my last Twitchcon, and it saddens me to say as a 10 year off and on attendee of Twitchcon, I think other creators should seriously consider not attending in the future. I did not feel cared for or protected, even bringing my own security and staff. I can't imagine how creators without those options would feel.
Stay safe y'all, everything is going to be okay :::
Full article part 2
Twitch responds following TwitchCon incident
Twitch further stated that law enforcement and on-site security responded to the incident, with the individual being “immediately blocked” from the venue as well as being “banned indefinitely from Twitch.” twitch statement
The platform added that it has increased security at the meet and greet check-in area, introduced more personnel around participating streamers, and suspended plus-one access for the rest of the weekend.
The platform reiterated its “zero tolerance for harassment or acts that inhibit the safety and security of our community.”
It’s not the first time Emiru has faced harassment at public events. Earlier this year, she and fellow streamers Valkyrae and Cinna were targeted by a stalker during a Santa Monica appearance. This ordeal raised similar concerns about the safety of creators at fan conventions.
Likewise, other streamers, including Asmongold, have previously warned women not to attend TwitchCon after Valkyrae and QTCinderella dropped out of the event over safety concerns.
In Emiru's statement above she says that her preferred* security was barred from the event due to a previous incident where the security restrained the arm of a stalker at a previous twitchcon
*She says preferred does that not mean personal security here? Does it instead mean a prior twitchcon security who later got banned?
Ahh well that's on Twitch. The events I worked on we never even considered disallowing streamers from having their own security. Those weren't Twitchcon though, they were different conventions where a Twitch party would be a side thing mostly for streamers to get drunk in private with Twitch staff and each other (hence the need to have our own team shadow the unsafe dudes).
From what I can tell, they do allow the streamers to have private security but the specific individual she prefers to have working security has been banned from the event due to a previous event where someone behaved inappropriately towards her and the guard detained the guy until the cops arrive. So that's an extremely small plus for letting people have their own security and a massive minus for banning that one guard for doing their job.
from her video on the matter, it seems to clarify that her preferred security was her own personal security, not someone provided by the event.
I think the statement is just including that elaboration as an aside: the person there is her personally hired guard, but not the usual one she hires (I think she's assuming fans might recognize the usual one on sight and so would think the unfamiliar guard wasn't hired by her? Or they might have heard her security was banned and not have realized she hired someone else?).
The preferred guard, the one that she likes and uses a lot for stuff like this, was banned from twitchcon last year for detaining a creep while waiting on the con guards (or the cops not sure) to arrive
Ty for clarification