 SUNNYVALE, Calif., March 01, 2021 GLOBE NEWSWIRE -- Proofpoint, Inc. , NASDAQ: PFPT, a leading next-generation cybersecurity and compliance company, today announced its Board of Directors has elected Elizabeth Betsy Rafael as a new independent director, effective Thursday, February 25, 2021. Ms. Rafael has also been appointed as the chair of Proofpoints audit committee. 