Security jobs in your ZIP code The private Security Guard industry in South Africa provides security related services including premise monitoring. guarding, armed protection, escorting and investigating services to companies and private individuals. Surprisingly, the private security industry in South Africa is the largest in the world as per Wikipedia. In South Africa, the Security Guards are ranked according to their qualifications from A to E. The grade of ‘A’ being the highest grade. The roles and responsibilities of guards in various grades differ. The security officers of a higher grade are qualified to perform all the duties of the ...