OPSEC (Operations Security) is simply denying an enemy or adversary information that could harm you or benefit them. This applies online, in person, and to what can be otherwise observed. This is very important in today's world, and is exploited by criminals, terrorists and profiteers.
Operations Security Professional's Association (OSPA) is dedicated to improving awareness of OPSEC procedures, as well as building cohesion amongst its members. OSPA members work together behind the scenes to further the discipline that is OPSEC. First and foremost, however, OSPA wants to help keep people safe.
OSPA is a 501c3 organization that focuses on peer development and interaction in order to help provide the best possible training and resources to beinning and established OPSEC professionals, as well as to Schools, Military, Law Enforcement, etc.