Pros
Very good place for internship or to gain experience as a new grad. Technology is great, created by visionary genius Ashar Aziz.
Cons
As you grow from a new grad position at FireEye, you will realize management is consistently incompetent throughout the organization. The Malware Research group is dysfunctional. Management is egoistic, partial and focused only on personal growth. This team had one of the worst attrition rates, that witnessed talented people leaving key positions which were then back-filled by external candidates favored by the management but, not necessarily sufficiently qualified. In the Malware Research team, there was absolutely no scope for new ideas like applying machine learning for detection -- mainly due to management's lack of ML knowledge and experience, and lack of interest in filling the gap by hiring right talent for the job. Data scientists were expected to simply serve malware researchers, not to innovate. The sad part is FireEye was a company that could have become the Google or Facebook in the security space but, it's unlikely to happen, thanks to the poor state of management.