I was checking out a new crypto today and, surprise, surprise! It was infested with a trojan virus labeled by the anti-virus as "Trojan.MSIL.CoinStealer.on". To put this into perspective, so you don't think it's a false positive: I've had more than 20 wallet programs installed on my computer without any virus detections. I'm using one of the top 2 antiviruses in the world, Kaspersky Internet Security. In more than 7 years of use, it only once gave me a somewhat-false positive when I was using a hacking tool, which was not really a danger for my computer, since I was the one using it.
The currency in question is called Bata(BTA). Beware of such programs! Always use a great anti-virus to protect yourself from losing all of your coins! If you can't afford one, I recommend getting the absolutely free Kaspersky Virus Removal Tool and scan every wallet before and after installing it!
Information taken from Symantec.com
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