Pros
The benefits, pay, and PTO were certainly good selling points when I was interviewed.
Cons
The company culture is extremely political and cut throat. Management will play favorites. Coworkers will be watching you and will report your actions to HR without so much as a word to you. Management will not investigate these claims properly, and will immediately fire up formal HR meetings without evidence. Pay increases are stingy. I've had far better compensation increases at other companies. They are extremely rigid with their pay increase/promotion schedule and will not budge regardless of performance. I've seen them fire people without warning. I know it is "at will employment" but some common decency is expected. Do not expect it at Proofpoint. If they do not like you, you're gone, regardless of work performance. Management style is archaic. I feel like I worked in a feudal system. You are expected to be quiet, work, and not ask too many questions. When a Senior Manager tells you: "Technical skills are not important," at a company that specializes in IT Security, you should be concerned. They want "yes men/women," they do not want technical people that ask questions in an effort to improve company practices.