| Date | Title | |
|---|---|---|
| May 20, 2014 | SC Magazine - Proofpoint acquires NetCitadel in 24M deal |
|
| Jan 18, 2012 | 451research.com - Proofpoint acquires NextPage to help govern distributed data |
|
| Jun 24, 2008 | Network World - Proofpoint acquires Fortiva |
|
