Cybersecurity Services in Philadelphia
NetSys provides cybersecurity services to businesses in Philadelphia: 24/7 managed detection and response on every device, identity and email protection across Microsoft 365, vulnerability scanning, staff training and immutable backups, with an engineer acting on alerts rather than forwarding them. Center City is about two hours from Park Slope down the Turnpike, so on-site work is planned in blocks rather than dispatched same-day. Monitoring, help desk and remediation run remotely around the clock from Brooklyn. On-site commitments are arranged in advance and sized to the engagement. Most clients run between 10 and 75 seats, and every agreement is month to month.
The short answer
NetSys provides cybersecurity to businesses in Philadelphia: ThreatDown managed detection and response on every device, multifactor authentication and Conditional Access across Microsoft 365, Barracuda email protection, Rapid7 vulnerability scanning, security awareness training and immutable backups with tested restores. Delivery is remote-first from Brooklyn, and on-site commitments are arranged in advance and sized to the engagement, up to a dedicated engineer with a drive time generally under an hour where regular presence is part of the scope. Most clients run between 10 and 75 seats, and every agreement is month to month.
How cybersecurity is delivered in Philadelphia
Center City is about two hours from Park Slope down the Turnpike, so on-site work is planned in blocks rather than dispatched same-day. Monitoring, help desk and remediation run remotely around the clock from Brooklyn. On-site commitments outside the tri-state area are arranged in advance and sized to the engagement: a mostly remote engagement needs no dedicated on-site engineer, while an engagement that calls for regular presence, such as vCISO work with someone on site two days a week, gets a dedicated engineer whose drive time is generally under an hour, depending on where that engineer and your office are. Hardware ships pre-configured, so most projects need no visit at all. The buildings decide a lot of the design. Center City's older towers share risers and often have one carrier, University City and the Navy Yard have modern fiber, and the King of Prussia and Conshohocken office parks are Comcast territory with Verizon Fios in pockets, so carrier choice is checked before any failover promise is made. The carriers we see most in Philadelphia are Comcast Business, Verizon Fios and Crown Castle fiber, and the failover design starts with which of them actually reach your building.
Who cybersecurity in Philadelphia is built for
Most of our Philadelphia work sits in Center City, University City, the Navy Yard, King of Prussia and Conshohocken: medical practices and health-system affiliates on Epic, biotech and life-sciences companies on Benchling, law firms on iManage, accounting firms on Thomson Reuters CS Professional Suite, nonprofits and universities' affiliates on Blackbaud, and contractors on Procore. Each carries its own compliance load, which the section below covers, and each has a line-of-business vendor we coordinate with rather than work around. Companies with an internal IT person fit too; in that case we supply the monitoring, the security stack and the after-hours coverage behind them, and they keep their projects.
What tends to go wrong in Philadelphia
Two things shape the continuity design here. First, the weather and the grid: Ida's remnants flooded the Schuylkill and Vine Street Expressway corridor in September 2021, so ground-floor server rooms near the river are the design case for off-site backups. Second, the attacks that actually land locally are ordinary ones, and the public record shows how they go: the 2023 breach of the City of Philadelphia's email environment, disclosed by the city in October 2023, which exposed health and personal information held in mailboxes. The controls in the next section are the ones that would have changed those stories.
Cybersecurity in Philadelphia: what NetSys delivers
Watch and respond
- ThreatDown MDR and EDR on every device, with a 24/7 team that isolates and investigates rather than emails
- Rapid7 InsightIDR or Microsoft Sentinel collecting identity, email, endpoint and firewall logs so an intrusion is visible in one place
- Written incident response plan with named owners, tested once a year on a tabletop exercise
- Post-incident reports written for your insurer and your counsel, not just your IT team
Harden the tenant and the people
- Microsoft Defender for Business, Entra ID Conditional Access and phishing-resistant sign-in for finance staff
- Legacy authentication off, dormant accounts closed, forwarding rules and consent grants reviewed monthly
- Barracuda Email Protection with impersonation protection, plus DMARC enforcement for the domain
- KnowBe4 training on a recurring schedule, with a wire-transfer and vendor-change verification procedure written for finance
Measure and recover
- Rapid7 InsightVM scans of the internal and external footprint, with a monthly fix list
- Managed firewall with intrusion prevention, segmentation and vendor access that is logged and switched off when the work ends
- Immutable, off-site backups with restores run on a schedule and the result written down
- Free remote external penetration test before you hire us; Tier 2 source-code testing quoted per codebase
A 35-person accounting firm in University City
The specific engagements behind this profile are under NDA, so it is written as a generalization rather than a named client. Our published, client-approved outcomes are in case studies.
A 35-seat accounting firms in University City that handles regulated data in Thomson Reuters CS Professional Suite across the office and remote staff on home Wi-Fi. An enterprise customer's vendor questionnaire has thirty questions and the honest answer to eleven is 'we think so'. Email protection is whatever Microsoft ships by default, DMARC was never set up, the Comcast Business firewall is a consumer router, and the last security training anyone remembers was a poster.
- Barracuda Email Protection placed ahead of the mailboxes and SPF, DKIM and DMARC corrected so the domain can no longer be spoofed, with a callback rule adopted for any change in payment instructions
- Cisco Meraki firewall installed with intrusion prevention, geo-blocking, segmentation between finance, servers, printers and guests, and DNS filtering on every device
- A written incident response plan with named owners, the insurer's hotline and counsel's contact, tested on a tabletop exercise
- Monthly review of dormant accounts, forwarding rules, consent grants and administrator assignments, reported in writing
- Microsoft 365 investigation: sign-in logs, forwarding rules and consent grants reviewed to establish whether a mailbox was compromised, then multifactor authentication and Entra ID Conditional Access enforced for every account
- Rapid7 InsightVM deployed for scheduled vulnerability scanning, with the first month's findings prioritized and closed
The exposure is measured monthly and closed, the people are trained against the lures they actually receive, and an incident has a plan with names on it. Leadership sees a written report every month. Terms stay month to month.
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.
Compliance in Philadelphia: 73 P.S. § 2301 and what sits on top of it
If you hold personal information on a resident of Pennsylvania, Pennsylvania's Breach of Personal Information Notification Act (73 P.S. § 2301 et seq., amended by Act 151 of 2022) requires notice to affected Pennsylvania residents without unreasonable delay after a breach of unencrypted personal information, and the 2022 amendment widened the definition of personal information to include medical, health-insurance and account-credential data and added a notice to the Attorney General when more than 500 residents are affected. Healthcare systems and practices add HIPAA, financial advisors add SEC and FINRA expectations, and the region's defense and aerospace suppliers face CMMC 2.0. The security service is built to produce the evidence those rules ask for: multifactor authentication and Conditional Access reports, endpoint detection coverage, vulnerability scan results, backup restore records and a tested incident response plan. Most firms we take over have none of it documented, which is the part that matters if you ever have to demonstrate compliance, so the documentation is built during onboarding rather than sold as a separate project.
What cybersecurity costs in Philadelphia
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, whether 24/7 response is needed beyond monitoring, 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.
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.
Not a fit: organizations that want a security product installed and left alone. The service is monitored, reviewed and reported monthly, and it changes the way administrators, finance staff and vendors work. If that is not wanted, a tool purchase serves better than an engagement.
Read next
Industry pages: IT for Healthcare · IT for Life Sciences & Biotech
Terms used on this page: Managed Detection and Response (MDR) · Endpoint Detection and Response (EDR) · Conditional Access
Guides: MDR versus antivirus for a small business · the Conditional Access policies to turn on first
Related pages
Read the full Cyber Security service page. See everything NetSys delivers in Philadelphia.
Also in Philadelphia: Managed IT Services · IT Consulting · IT Support
Cybersecurity elsewhere: New York City · Brooklyn, NY · Nassau County, NY · Suffolk County, NY · Westchester County, NY · Stamford, CT
Related services: Penetration Testing · Cyber Insurance Readiness · Security Assessments · Managed Detection & Response (MDR)
Cybersecurity in Philadelphia: FAQs
Can you work alongside our internal IT person?
Yes. In a co-managed arrangement your person keeps the day-to-day and we run monitoring, the security stack, vulnerability management and after-hours response, with the split written into the agreement.
Do we need a security assessment before signing up?
The free external test is where most engagements start. A fuller assessment of the tenant, devices, network and backups is scoped separately and produces a prioritized fix list that becomes the first ninety days of the service.
What does the free external penetration test include?
The free offer is a remote external penetration test, limited to the information available to NetSys and the external scope agreed with you. It examines what your business shows the internet and reports the findings with their scope and limitations stated. Reviews of tenant settings, devices, internal networks or backups need a separate scope.
Do you have an office in Philadelphia?
Our office is in Brooklyn, NY. Center City is about two hours from Park Slope down the Turnpike, so on-site work is planned in blocks rather than dispatched same-day. Outside the tri-state area the on-site arrangement is agreed before the engagement starts and sized to what it needs: none for a mostly remote account, and a dedicated engineer, generally within an hour's drive, where regular presence such as vCISO work with someone on site two days a week is part of the scope. The proposal states that arrangement, coverage hours and any travel in writing, and the agreement runs month to month.
What does Pennsylvania's breach notification law require of a small business?
73 P.S. § 2301 et seq. requires notice to affected residents without unreasonable delay after a breach of unencrypted personal information, which since the 2022 amendment includes medical and account-credential data. More than 500 affected residents also triggers a notice to the Attorney General. Encryption and a written response plan are the practical defenses.
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.