Proofpoint acquires NetCitadel for approximately $24M in cash Proofpoint announced that it has acquired Silicon Valley-based NetCitadel for approximately $24M in cash. The acquisition extends the reach and capabilities of Proofpoint's existing advanced threat solutions, adding additional threat verification and containment capabilities via an open platform that unifies products from Proofpoint and other vendors. The unification of disparate threat intelligence data combined with automated incident response enables security professionals to respond to threats faster, in a more scalable way, and with higher confidence and accuracy. This allows an enterprise to prioritize their efforts more effectively to prevent data breaches and data loss across their entire organization. Proofpoint currently expects the transaction to have no material impact on revenue, billings, and non-GAAP profitability for Q2.