--- title: "Cybersecurity Services in Chicago — MSSP & 24/7 SOC | EFROS" description: "Chicago MSSP and managed cybersecurity for small and mid-size businesses: 24/7 SOC, MDR, SentinelOne, email/BEC defense, vCISO, and a bundled 4-hour IR SLA. Built cybersecurity-first. Serving Cook, DuPage, Lake, and Will counties since 2009." canonical: https://efros.com/cybersecurity-services-chicago/ --- - [Home](https://efros.com/) - /Cybersecurity Services in Chicago MSSP · Chicago metro # Cybersecurity services in Chicago — 24/7 SOC, MDR, MSSP. EFROS is a cybersecurity-first MSSP for Chicago-area small and mid-size businesses. A 24/7 Security Operations Center, managed detection and response, email/BEC defense, vCISO leadership, and a bundled incident response retainer — under one accountable SLA. Serving Cook, DuPage, Lake, Will, and the collar counties since 2009. The security partner Chicago's logistics, freight, and operational businesses trust when a breach would stop revenue. [Get a Free Security Assessment →](https://efros.com/free-security-assessment/?source=cybersecurity-chicago) [Book 20 min](https://efros.com/book/?type=20min&source=cybersecurity-chicago) By [Stefan Efros](https://www.linkedin.com/in/stefanefros-cyberdefense/), CEO & Founder, EFROS Updated · July 25, 2026 The threat ## What's actually hitting Chicago SMBs The four attack patterns that drive nearly every loss we see in the 25–300 employee band, and the controls that stop each one. ### Ransomware priced to your weekly revenue Operators study your business before they strike and set the ransom against what a week of downtime costs you. Chicago's logistics, manufacturing, and professional-services firms are squarely in the target band. Prevention plus tested recovery is the only answer that holds. ### Business email compromise & wire fraud A spoofed vendor or executive email reroutes a payment, or a rate-confirmation gets altered before a load moves. BEC is the highest-dollar attack most SMBs face, and it lands in the inbox. That's why EFROS leads with email/BEC defense, not antivirus. ### Identity & MFA-fatigue attacks Attackers buy credentials and spam push prompts until someone taps approve. Conditional Access, phishing-resistant MFA, and 24/7 identity monitoring close the gap that endpoint tools alone can't see. ### Vendor & supply-chain blast radius Your TMS, ELD, EDI, or SaaS vendor gets breached and you inherit the exposure through an over-scoped OAuth grant. EFROS monitors third-party token scopes and anomalous grants — the attack path most MSPs never look at. The program ## Managed cybersecurity, end to end Engage EFROS as your full MSSP, or as the security layer behind your existing IT. Either way you get the same operating stack. 24/7 SOC + MDR ### Watched around the clock 24/7/365 Security Operations Center coverage with SIEM-driven detection and response, SentinelOne endpoint detection, and pre-authorized containment. Threats get triaged and contained while you sleep, not queued for Monday. Email / BEC defense ### Stop the inbox attack DMARC, SPF, and DKIM enforcement, anti-impersonation rules, lookalike-domain monitoring, and freight-grade controls against rate-confirmation and factoring fraud. Plus phishing simulation and security awareness training. vCISO & compliance ### Direction + documentation Fractional security leadership, cyber-insurance-renewal support, and audit-ready reporting. SOC 2-aligned and ISO 27001-aligned with controls mapped to NIST CSF 2.0 — the governance your board and your carrier ask for. Explore the building blocks: [SOC as a Service](https://efros.com/security/soc-as-a-service/), [MDR](https://efros.com/security/mdr/), [vCISO](https://efros.com/security/vciso/), and [Microsoft 365 security](https://efros.com/security/microsoft-365/). Why teams trust EFROS ## The proof, on one line each - ✓Operational since 2009 - ✓24/7/365 SOC + MDR - ✓Guaranteed 4-hour IR response SLA (contractual) - ✓SentinelOne endpoint detection & response - ✓Email / BEC defense (DMARC enforcement) - ✓vCISO & cyber-insurance readiness - ✓SOC 2-aligned · ISO 27001-aligned - ✓Controls mapped to NIST CSF 2.0 - ✓InfraGard member (FBI critical-infrastructure partnership) EFROS operates SOC 2-aligned and ISO 27001-aligned with controls mapped to NIST CSF 2.0. EFROS provides readiness and aligned controls; it is not a certification body. EFROS is also a member of InfraGard, the FBI's public-private partnership for critical-infrastructure protection; membership does not imply endorsement of EFROS or its services by InfraGard, the InfraGard National Members Alliance, or the FBI. Questions ## Chicago cybersecurity — frequently asked ### Is EFROS an MSSP or an MSP? Both, and that is the point. EFROS is a cybersecurity-first MSP/MSSP: we run the full managed-IT stack and the managed-security stack under one accountable SLA. You can engage us purely for security (24/7 SOC, MDR, vCISO, email defense) on top of your existing IT, or for the complete IT + security program. Most Chicago SMBs in the 25–300 employee band find the bundled program both cheaper and tighter than stitching an MSP and a separate MSSP together. ### Do you have a Chicago SOC, or is it remote? Our 24/7 SOC is delivered remotely by design — security operations should never depend on whether an analyst can get to a building during a snowstorm. We serve the Chicago metro (Cook, DuPage, Lake, Will, Kane, and the collar counties) and dispatch on-site for work that needs physical access. You get continuous, enterprise-grade monitoring without paying for local overhead. ### We have an internal IT person but no security team. Can you just be the security layer? Yes, that is our co-managed model. Your IT lead keeps running day-to-day IT, and EFROS sits behind them as the 24/7 SOC, MDR, email defense, vCISO, and incident-response bench. Your team retains control while gaining enterprise security tooling and senior analysts without three new full-time hires. ### Can you help us pass a cyber-insurance renewal or a customer security questionnaire? Yes. Carriers and enterprise customers now require MFA, EDR, 24/7 monitoring, email authentication, tested backups, and a documented incident-response plan. EFROS operates SOC 2-aligned and ISO 27001-aligned with controls mapped to NIST CSF 2.0 and produces audit-ready reporting that answers those questionnaires directly. To be precise: we provide readiness and aligned controls. We are not a certification body and do not issue certifications. ### We're a freight broker / carrier / 3PL. Do you understand our risk? Deeply. Transportation and logistics is the EFROS core vertical. We defend against freight-specific fraud (rate-confirmation spoofing, factoring-email isolation, fictitious pickups, and load-board credential theft) and we harden the TMS/ELD/EDI stack. See our cargo-fraud-defense program for the full picture. ### What if we're being attacked right now? If you have an active security incident, do not wait on this page — go to our incident-response line. EFROS offers a bundled Incident Response retainer with a guaranteed 4-hour response SLA and a named incident commander for clients, and emergency engagement for new contacts in crisis. Chicago cybersecurity ## Tell us where you're exposed. Send us your size, your stack, and what's driving the conversation — a breach scare, a cyber-insurance renewal, a customer questionnaire, or a board ask. A senior engineer responds within one business day. Active incident? Use the incident-response line. Phone [+1 (765) 888-8888](tel:+17658888888) Email [info@efros.com](mailto:info@efros.com) Availability 24/7, around the clock Fields marked * are required Full Name * Email * Phone (optional) 🇺🇸 +1 Company Service Select a service Free Security Score Managed IT Services Cybersecurity Assessment Microsoft 365 Security Email Security / DMARC 3CX / VoIP Backup / Disaster Recovery AI Automation Logistics IT / Cybersecurity Cargo Fraud Defense Assessment Other Company size Select size 1–10 users 11–25 users 26–75 users 76–150 users 151–300 users 300+ users Timeline Select urgency Planning / researching Need help this month Active issue / outage Security incident in progress Insurance / compliance deadline Do not submit passwords, API keys, MFA codes, sensitive credentials, or confidential incident data through this form. For an active security incident, call [+1 (765) 888-8888](tel:+17658888888). 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Request Assessment Related EFROS resources ## Chicago cybersecurity — related [### Cybersecurity services The full MSSP stack — SOC, MDR, SIEM, vCISO.Open→](https://efros.com/security/) [### Free Security Assessment 60-second external posture scan + senior engineer follow-up.Open→](https://efros.com/free-security-assessment/) [### Incident response Bundled IR retainer — guaranteed 4-hour response SLA.Open→](https://efros.com/security/incident-response/) [### Logistics & trucking Freight-grade email security and TMS hardening.Open→](https://efros.com/industries/logistics/) [### Managed IT in Chicago The full IT + security program for Chicago SMBs.Open→](https://efros.com/managed-it-services-chicago/) [### Pricing How EFROS packages and prices managed security.Open→](https://efros.com/pricing/)