User blog comment:AdmMiller/What's so great about Tali? And why do most dislike Miranda?/@comment-2036282-20100714011336

AdmMiller, I didn't get what you mean calling Tali most "secure" of these three. I don't think Miranda and Jack are so vulnerable. Both of them won't hesitate to kill everyone who threatens or pisses them off somehow(Examples. Miranda: Niket, Wilson. Jack: Aresh, many unknown victims.)

Tali seems the most vulnerable, because she can't simply protect herself from danger. You have to save her THREE times in ME 1-2(if Tali's loyalty mission counts.. oh, and I didn't mention possible occasion when she is about to fall off the platform and Shepard grabs her arm). I think, it shows her vulnerability very well, so you gotta be kidding. No offence, it's my IMHO.