Best Private Security in Oakland, CA

Security Industry Specialists (SIS) is a highly regarded private security firm founded in 1999 and headquartered in Mountain View, CA, with a strong presence in Oakland. Specializing in corporate and retail environments, SIS has built a reputation for reliability and professionalism, serving major clients across the Bay Area. With a focus on customized security solutions, they offer services like event security, loss prevention, and risk assessment, backed by extensive training and technology. Their high customer satisfaction stems from responsive service, 24/7 support, and a commitment to community safety, making them a top choice for businesses in Oakland seeking dependable protection.

G4S Secure Solutions USA, part of the global G4S network, has been serving Oakland since its founding in 2004 and is known for its comprehensive security offerings. With a local office in Oakland, they provide armed and unarmed guards, patrol services, and integrated alarm systems, tailored to residential, commercial, and industrial needs. Their experienced team emphasizes proactive risk management and has garnered positive reviews for professionalism and quick response times. G4S maintains high standards through rigorous training and compliance, ensuring clients receive reliable protection backed by decades of industry expertise and a strong regional presence.

Security Company of America (SCA), founded in 2001, has expanded to serve Oakland with a focus on personalized security solutions for homes, businesses, and events. Known for their executive protection and 24/7 monitoring, SCA combines advanced technology with highly trained personnel to deliver top-tier service. Their reputation for customer care and adaptability has earned them strong ratings and loyalty in the community. With an emphasis on transparency and ethical practices, SCA provides reliable security that addresses modern threats, making them a trusted partner for Oakland residents and organizations seeking peace of mind.