First Guardian Security offers 24*7 security guard services in San Mateo, ensuring your property is always protected. Our vigilant security personnel are highly trained to address potential threats and provide peace of mind for residents and businesses. We use the latest technology and strategies to enhance safety and security for our clients. Our commitment to excellence means you can trust us for responsive and effective security solutions, day or night. Let us be your go-to choice for dependable security services in San Mateo.