If you want to demonstrate your proficiency in accomplishing IT system security tasks, you should think of achieving the GSEC certification.
PayScale data indicates that penetration testers make a median annual salary of $84,000, which is above the national mean salary of $51,960 for all professions. The salary of a GPEN certified is $100k approximately.
GCFA certification evaluates knowledge that is not targeting only law enforcement professionals, but for organizational and corporate incident.
The GCIA certification makes a candidate learn Advanced Analysis and Network Forensics. He becomes able to prove his skils for analyzing data.