Sounds like a HE Note Security incident then, well that has happened to all of them at some point. An Exchange is an Exchange, has always been and will always be. Of course, it would be good if HE could take a 100k hit at some point, without needing your private funds.
I've been reading through all of the comments so far and I wonder why some people believe their Hive Wallet might have been hit. Are they out of touch with the reality of this technology or have plaintext Keys been leaked?