Thoma Bravo buys cybersecurity vendor Proofpoint for $12.3B in cashhttps://techcrunch.com/2021/04/26/thoma-bravo-buys-cybersecurity-vendor-proofpoin-for-12-3b-in-cash/ by tomashertus • 5 years ago 1 0 5 years agoTEtechcrunch.com