Actually, there is a much simpler way to deal with this: Never click on any links mailed to you :-).
For something like the Toshiba laptop, if I had gotten that mail I would have gone to the Toshiba web site and searched for information about the laptop model involved, and if I found a link starting from Toshiba's official web site, I'd be much more likely to click on it (although if the problem description also had serial numbers and wot-not I could check manually, I'd still be more likely to do that than to run their program).
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