Here are some common security services:

• Physical Security: This involves the deployment of security personnel to physically protect people, buildings, or assets. Physical security measures may include access control systems, surveillance cameras, security guards, and patrols.
• Event Security: Event security services are employed to ensure the safety and security of large gatherings or events. This may involve crowd management, access control, bag checks, and emergency response planning.
• Executive Protection: Also known as close protection, executive protection services are designed to ensure the safety of high-profile individuals such as celebrities, politicians, or corporate executives. These services often include personal bodyguards, secure transportation, and risk assessment.
• Cybersecurity: Cybersecurity services focus on protecting computer systems, networks, and data from unauthorized access, attacks, or breaches. This may involve vulnerability assessments, security audits, intrusion detection, incident response, and the implementation of security measures such as firewalls and encryption.
• Alarm Monitoring: Security service providers may offer alarm monitoring services where they monitor security systems such as burglar alarms or fire alarms. When an alarm is triggered, the monitoring center takes appropriate action, such as contacting emergency services or notifying the property owner.
• Security Consulting: Security consulting services involve assessing risks, developing security strategies, and providing expert advice on security measures. Security consultants help organizations identify vulnerabilities and develop comprehensive security plans and policies.
• Private Investigations: Private investigators offer services to individuals or organizations to gather information or evidence related to legal, personal, or business matters. Private investigators may conduct surveillance, background checks, asset searches, or locate missing persons.

It's worth noting that security services can vary in scope and complexity, and different providers may offer a combination of these services based on client needs. Additionally, the specific regulations and licensing requirements for security services may vary depending on the country or region.