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ST. LOUIS (KSDK) - Thehacking of the Associated Press' Twitter account Tuesday is the latest in a string of attacks on media in recent weeks.

CBS News programs "60 Minutes" and "48 Hours" were compromised Saturday.

These are sources we trust to give us accurate information, so we invited Leilani Carver, a professor of communication and social media expert at Maryville University to join First @ 4 to talk about how powerful a tweet can be.

Click the video player above to hear if Carver thinks this is the new trend in terrorism.