Wow - Avast decided to disable their JavaScript interpreter globally!
The vulnerability report they mention wasn't just me, it was a Project Zero collaboration with @natashenka 

I think this is the right decision, it was a *lot* of attack surface.https://twitter.com/avast_antivirus/status/1237685343580753925 …
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Isn't it likely that they just never finished it and the value of the Date object is just a placeholder/dummy?
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No, it's just a source of non-determinism they're trying to avoid.
End of conversation
New conversation -
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I think this behavior can be observed in defender also. incomplete implementation of interpreter. don't remember I learned from you or another researcher
Thanks. Twitter will use this to make your timeline better. UndoUndo
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