Cybersecurity · Los Angeles

Cybersecurity Services in Los Angeles, CA

NetSys protects Los Angeles businesses with managed detection and response on every computer, identity and email controls in Microsoft 365, vulnerability scanning, phishing training and backups an intruder cannot delete. An engineer investigates and acts on each alert, and the whole service runs remotely from our Brooklyn office.

All IT services in California

The short answer

NetSys provides cybersecurity services in Los Angeles, CA built around a ThreatDown MDR agent on each laptop and server, multifactor sign-in with Entra ID Conditional Access in Microsoft 365, Barracuda mail filtering, Rapid7 InsightVM vulnerability scans, KnowBe4 phishing training, Keeper password vaults and immutable backups that we restore to test. It is delivered remotely from Brooklyn: a compromised laptop can be cut off and its accounts frozen in minutes, so no engineer needs to come on site, and none does. Monitoring and emergency response run 24/7, terms are month to month, and a free external penetration test is available.

Service information by The NetSys Group. Our editorial standards.

How cybersecurity is delivered in Los Angeles

Security work for a Los Angeles company happens in software, which is why distance from Brooklyn costs nothing in response. ThreatDown agents on every endpoint report to the managed detection team, which can cut a machine off the network in seconds. Our engineers revoke sessions and reset credentials in Entra ID, pull a malicious message from every mailbox through Barracuda, and push firewall rule changes to Cisco Meraki or Fortinet devices from the console. Rapid7 InsightVM scans run on a schedule, and the findings land in a ticket rather than a forgotten report. NetSys does not send engineers on site in Los Angeles; where a firewall must be replaced, it ships configured and your staff or contractor swaps it while we watch. Spectrum Business, AT&T Business Fiber and Frontier, now part of Verizon, are carriers to check for a second circuit. Monitoring runs 24/7 from Brooklyn, and so does emergency service. Our staffed help-desk hours are 4 a.m. to 11 p.m. Eastern time (1 a.m. to 8 p.m. Pacific), seven days a week. The proposal states severe-incident escalation, authorized remediation and any other after-hours work.

What attackers have done to Los Angeles institutions

Three public incidents explain the controls we insist on. In September 2022 the Vice Society group hit the Los Angeles Unified School District with ransomware and published stolen data after the district refused to pay. In February 2024 a phishing campaign captured the credentials of 53 Los Angeles County Department of Public Health employees, exposing information on about 200,000 people, including diagnoses and Social Security numbers. On July 19, 2024, ransomware forced the Superior Court of Los Angeles County to take its network down, and all 36 courthouses closed the following Monday while case management and e-filing were offline. The lessons are direct: phishing-resistant multifactor authentication, managed detection that acts in minutes, backups the attacker cannot reach, and an incident plan that assumes email and file servers are gone.

Security controls for the industries that cluster in Los Angeles

Each of the city's major industries brings its own threat. Studios and their vendors guard unreleased content, and many are asked to meet the MPA Content Security Best Practices through a Trusted Partner Network assessment, which means segmented networks, logged access to shared storage and controlled file transfer. Law firms near the downtown courts protect privileged files and court deadlines. Medical practices fall under HIPAA and California's Confidentiality of Medical Information Act. Logistics companies around the Port of Los Angeles, the busiest container port in the Western Hemisphere for 26 years running, are a favorite target for invoice fraud, where a spoofed email changes the bank details on a freight payment. Real estate firms face the same wire fraud at closing. We answer with DMARC to reduce spoofing, payment verification steps, privileged access controls and monitoring tuned to each pattern.

Wildfire, earthquake and the recovery side of security

The January 2025 Palisades and Eaton fires destroyed more than 16,000 structures between them and brought the federal disaster declaration DR-4856 for Los Angeles County. Commercial buildings were among the losses, along with the servers and paperwork inside them. Add the earthquake risk every Los Angeles business carries, and a recovery plan has to assume the building is gone, not just the server. That shapes our security design. Backups are immutable, so ransomware cannot encrypt or delete them, and a copy lives outside California. Identity sits in Entra ID rather than a server in a closet, so staff can sign in from anywhere once a clean device is in hand. Every agreement includes restore tests and a written incident plan with phone numbers that work when email does not. Of the more than 30 ransomware incidents NetSys has handled in three years, every one was fully recovered.

California law and the security evidence it calls for

California expects reasonable security and lets consumers enforce it. Civil Code 1798.81.5 requires security procedures appropriate to the personal information a business holds, and Section 1798.150 gives consumers a private right of action, with statutory damages, when unencrypted personal information is stolen because a business failed to maintain them. Since January 1, 2026, Section 1798.82 requires breach notices within 30 calendar days of discovery. The CPPA's cybersecurity audit regulations took effect the same day, with the first audit certifications due April 1, 2028 for covered businesses above $100 million in revenue. Advisers and broker-dealers in Century City also follow the amended SEC Regulation S-P, which now obliges them to keep a written incident response program and tell affected customers within 30 days. We produce the logs, reports and test records each rule calls for. This is general information, not legal advice.

What is included

Cybersecurity in Los Angeles: what NetSys delivers

Detection and response

ThreatDown managed detection and response with EDR agents on every workstation, laptop and server, monitored 24/7
Microsoft Defender for Business and Rapid7 InsightIDR telemetry from identities, email and endpoints, with a person acting on alerts

Identity and email

Entra ID Conditional Access and multifactor authentication across Microsoft 365, with legacy authentication switched off
Privileged access and privileged identity management so admin rights are granted just in time and removed afterwards

Exposure and recovery

Rapid7 InsightVM vulnerability scanning on a schedule, with findings fixed rather than filed
Cisco Meraki or Fortinet firewall management, segmentation and DNS filtering on office and remote devices

Published case study

Law office: layered security on Microsoft 365 with cloud-to-cloud backup

A 25-attorney firm needed client confidences protected better than a closet server could manage. Alongside a Microsoft 365 migration, NetSys layered anti-phishing and email threat protection, DNS filtering, multifactor authentication on every account and endpoint protection across attorney devices in the office and remote, and established independent cloud-to-cloud backup of the entire tenant because the recycle bin is not a backup strategy for privileged material. The firm reported 82% fewer IT support incidents per month within two quarters.

Read the full case study (25 attorneys + staff)

From our client work

Cybersecurity work for other clients

Insurance
Regional title insurance company
Barracuda email protection for 85 users, phishing simulations, employee security training, and MFA deployment.
Security Awareness & Phishing Training IT for Insurance Agencies and Brokers

Client names are withheld. These examples were chosen for the work involved, not for where the client is, so none is presented as a Los Angeles client.

What cybersecurity costs in Los Angeles

Cybersecurity is priced per user per month when it runs as an ongoing service, and per project for an assessment or a remediation. What moves the number: how many devices and identities are in scope, how much incident remediation and recovery is needed beyond the monitoring and authorized MDR actions in scope, which compliance standard the evidence has to satisfy, and whether the Microsoft 365 tenant is already on Business Premium or the security tooling comes from us. The free external penetration test costs nothing and runs remotely before any of that. Our managed IT pricing page explains how the fee is built.

How the monthly fee is built

Who this fits, and who it does not

Best fit: businesses with enough people, money movement or regulated data that a breach would hurt, and no security team of their own: professional practices, healthcare groups, importers, financial firms, nonprofits and agencies holding client credentials. Companies with an internal IT person fit as a co-managed arrangement.

Cybersecurity in Los Angeles: FAQs

How does cybersecurity work for Los Angeles organizations?

It runs remotely and continuously. ThreatDown agents on each device feed the managed detection team, which isolates a suspicious machine immediately while our engineers lock the affected accounts, review sign-in logs and clean the mailbox. Staff reach our help desk from 1 a.m. to 8 p.m. Pacific, and security monitoring and emergency response continue around the clock. Nobody needs to travel to contain an incident, and NetSys does not send engineers on site in Los Angeles. Onboarding follows a written scope, and the agreement runs month to month.

What is in a Los Angeles cybersecurity agreement, and what does it cost?

Each agreement bundles ThreatDown MDR on the endpoints, multifactor sign-in with Conditional Access, Barracuda filtering with DMARC enforcement, scheduled Rapid7 InsightVM scans, KnowBe4 phishing drills, Keeper vaults and immutable backups whose restores we test. The ongoing service is billed per user each month; a one-time assessment or a cleanup project gets its own quote after scoping. Your price depends on how many people, devices and cloud accounts we protect, what proof your auditors or insurer expect, and whether your Microsoft 365 plan already carries the security features. The remote external penetration test costs nothing.

Can this get a Los Angeles company through its cyber insurance renewal?

In most cases, yes. Underwriters now ask the same core questions: is multifactor sign-in enforced for mail and remote connections, does every endpoint run detection and response, are backups offline or immutable and tested, do staff get phishing training, and are administrator accounts controlled. Our service answers each one with records, such as MFA enrollment reports, a list of covered devices and restore test logs, which brokers and carriers accept as evidence. We also help fill in the renewal application so the answers match what is actually deployed.

What happens if a Los Angeles business is breached?

The managed detection team isolates the affected devices, our engineers contain the accounts and preserve the logs, and a dated account of events goes to your leadership, your lawyers and the insurance carrier. The response plan we write during onboarding already names who calls whom, so the first hour is spent acting. California's 30-day notice clock under Civil Code 1798.82 starts at discovery, so forensic facts arrive in days to support your counsel's decisions. Recovery comes from immutable backups, and we keep working until systems are clean and back in use.

Does NetSys protect Los Angeles businesses from Brooklyn?

Yes. NetSys runs managed IT and cybersecurity for Los Angeles organizations from its only office, in Brooklyn, NY, and distance makes no difference to software that isolates a device in seconds. We handle detection and response, identity protection, mail security, vulnerability management, staff training, backup and incident response, and we secure the devices and accounts around your practice-management, document management or freight systems while each software vendor supports its own application. Many engagements begin with the free remote external penetration test, which shows what your network exposes before you commit.

Start with the free test

See what an attacker sees before they do.

The free assessment is a remote external penetration test, limited to the information available to NetSys and the external scope we agree with you. Internal reviews and ongoing security management are scoped separately.

Explore Cybersecurity Scope 845-203-3914