shares of mandiant were rising in premarket trading wednesday after a report said microsoft was in talks to acquire the cybersecurity software and services company and mandiant posted a fourthquarter adjusted loss that was narrower than expectations mandiant mndt was rising 39 to 1844 the stock spiked 18 on tuesday after bloomberg citing people familiar with the discussions reported that microsoft msft was in talks to acquire mandiant the deliberations may not result in an offer the people said mandiant and