Legal and Ethical Framework of the Private Security Industry
Private security in South Africa operates under the Private Security Industry Regulation Act, which establishes PSIRA and requires every security service provider and security officer to be registered and to carry a valid identification card. A candidate must understand that a security officer is a private citizen with no greater powers than any other citizen. You may not arrest on suspicion alone; a citizen's arrest (lawful arrest) requires that an offence was committed or attempted in your presence, or that you have reasonable grounds to believe the person committed a scheduled offence. Detention must be immediate, the person must be handed to the police as soon as possible, and you must use only the minimum force necessary.
Key concepts to master: lawful arrest versus unlawful detention, the use of force (minimum necessary, proportionate, and only in defence of self or others or to effect a lawful arrest), trespass and the limits of a security officer's authority on private property, search and seizure (you may search with consent or under lawful authority; you may not conduct invasive searches), and the code of conduct covering honesty, confidentiality, and non-discrimination. Understand that private security may not perform police functions, may not wear police insignia, and may not detain a person for the purpose of extracting a confession.
Traps in questions: confusing 'detain' with 'arrest'; assuming a security officer may search anyone at will; believing a confession obtained by threat is valid; and assuming that because a person is on private property you may use any force. Another common trap is the idea that a security officer can act outside their jurisdiction or while off duty without authority.
Rule of thumb: if you cannot articulate the lawful basis (offence in your presence, reasonable grounds for a scheduled offence, or valid consent), do not arrest or search. Worked example: a shopper is seen concealing goods and passing the pay point without paying. This is an offence committed in your presence, so a citizen's arrest is lawful; you identify yourself, use minimum force, recover the goods, and hand the person and evidence to the police promptly, documenting times and witnesses.