Exclusive: The deal would follow a string of major acquisitions as Cisco strengthens its enterprise security portfolio.Technology giant Cisco is in advanced negotiations to acquire Israeli cybersecurity company Axonius for $2 billion, Calcalist has learned. Axonius was previously valued at $2.6 billion. The company operates in a space similar to Armis, which was sold for $7.75 billion last month.Axonius has raised approximately $700 million to date, with investors including Accel, Silver Lake, B...