"While we haven't had any reports of unauthorized activity on Dropbox accounts, we've taken a number of precautionary steps and continue to work around the clock to make sure your information is safe, " the post says.

CNN: Dropbox investigating possible security breach

Y2K Test : Check your PC's real-time clock to make sure that it is year-2000 compliant.

CNN: Top 10 Y2K fixes for your PC

Entrusted with your money, the clock is ticking once they make a purchase to get you a return.

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