Long said in movies and TV, it's the bullet that you don’t see that kills you. This was true for Target in 2011 where they missed the alerts their tools generated. This has remained so for many others ever since.
Pick an organization with 1000’s of employees. Look at the IT/Sec-Ops people as they really are. You’ll see cyber alerts fatigue that is driving up employee attrition in a landscape where skills gaps are large and recruiting costs are increasing. Worse, the enemies are still storming the enterprise.