Fear of the unknown. Fear of the unknown or irrational fear is caused by negative thinking (worry) which arises from anxiety accompanied with a subjective sense of apprehension or dread. Irrational fear like any other fears share common neural pathway that engages to mobilize bodily resources in the face of threat.
CITI Refresher. In order to maintain CITI certification, everyone is required to complete the CITI Refresher course every three (3) years after initial certification is obtained. Completion of the refresher modules can usually be completed in less than two hours. New employees must complete the required modules and obtain CITI certification within 90 days from date of hire. 2  Members of the human subject research team, including the Principal Investigator (PI), must have current certification.
CISSP is not the most technical certification but by far the most complete one in terms of security subjectsâ coverage. It took me around four hours to finish the 250 questions of the exam. CISSP is valid for three years and gaining CPEs is required to maintain and renew the certification. CEH: It is much more technical than the Security+ certification and focused on penetration testing methodology and various hacking tools.