Based on the David Nugent-Jason Lowen Controversy, should regulation exist for abuse of online speech?

The David Nugent-Jason Lowen Controversy made headlines in the Philippines in 2008 and remains a precedent for abuse of online speech that disrupted corporate operations. Essentially, Lowen had fabricated libelous material that alleged of Metro Pacific's ill corporate governance. Poor fact-checking and background investigations allowed Lowen's allegations to disrupt business and trigger resignations all via cyber tactics from his lone room across the Pacific. I am doing a study on freedom vs. abuse of online speech; thus, my question is, should there be regulations in play to prevent false and malicious online blogging/reporting from occurring? If so, what kind, and by what mechanism?