According to security researchers at Symantec, hackers have begun actively exploiting a new vulnerability in Microsoft Word that could allow them to take complete control of a victim's computer. Symantec sounded the alarm about the Word attack on Thursday.

The new Word hack is called a "zero-day attack" because hackers began exploiting the vulnerability on the same day the flaw was publicly disclosed. Rated "extremely critical," the unpatched vulnerability follows on the heels of three other unpatched Microsoft Word flaws.

At CIO Today.

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