From the first week of January through the April deadline, your systems can't blink. MJN delivers security-first managed IT that keeps accounting firms fast, compliant, and protected — with client financial data locked down and our US-based team monitoring everything around the clock.
Whether you want to supplement in-house staff or fully outsource your technology, we tailor a plan around your filing deadlines, your software, and your duty to protect sensitive financial data.
A Written Information Security Plan built to IRS Publication 4557 and FTC Safeguards Rule requirements — documented, maintained, and audit-ready.
Encryption, Zero-Trust access, and data-loss prevention to guard SSNs, returns, and financial records against breaches and identity theft.
Proactive maintenance and monitoring that keep your firm running through your busiest, highest-stakes weeks — when downtime is not an option.
Microsoft 365 hardening and advanced email security to stop phishing and business-email-compromise attacks targeting client funds.
Monitored, verified offsite backups so returns and working papers are recoverable in minutes — even during peak filing season.
Let staff and seasonal preparers work securely from anywhere with Zero-Trust VPNs and cloud-hosted desktops.
A dedicated in-house team that knows your systems and answers fast — because a frozen workstation on April 14th is an emergency.
Accounting firms are a top target for cybercriminals — you store Social Security numbers, bank details, and complete financial pictures for hundreds of clients. A single breach means regulatory exposure, lost client trust, and a busy season derailed at the worst possible moment. The IRS now requires every firm with a PTIN to maintain a written data security plan, and cyber-insurance carriers expect real controls behind it.
At MJN Technology Services, we make that protection practical. We build a dependable, secure foundation that satisfies your compliance obligations while keeping your team productive through deadline crunches. Our services scale with your firm, so your technology supports growth instead of getting in the way.
Accounting firms run on a calendar most IT providers don't understand — quarterly estimates, extensions, year-end close, and a tax season where every hour counts. MJN specializes in managed IT for Long Island CPA and accounting practices, keeping your systems fast and secure when the pressure is highest.
Our expertise covers the compliance frameworks and tax and accounting software your firm depends on every day. We manage your technology proactively — protecting client financial data, keeping you aligned with IRS and FTC requirements, and giving you one accountable partner instead of a patchwork of vendors. The MJN stack gives you the insight and guidance to make informed decisions and get real return on your technology investment.
What Long Island firm owners ask before they hand over tax-season systems and client data.
Yes. We help CPA firms create and maintain a Written Information Security Plan aligned to IRS Pub. 4557 and the FTC Safeguards Rule — documented controls, not a template left on a shelf.
We support the Microsoft 365 and tax/accounting stacks Long Island firms actually run. Share your exact platforms on the intro call and we’ll confirm fit before onboarding.
We treat January–April as a change-freeze window for risky upgrades, tighten monitoring, and prioritize tax-critical systems so a workstation or server issue doesn’t blow a filing deadline.
Zero-Trust access, MFA, email security, encryption, endpoint protection, and verified offsite backups — plus separate Microsoft 365 protection so a compromised mailbox doesn’t erase years of client correspondence.
Yes. In a co-managed setup your person keeps day-to-day user support and firm knowledge; MJN takes monitoring, patching, security operations, backup verification, and compliance documentation underneath.
Carriers typically want MFA, EDR, email filtering, tested backups, and security awareness training — with evidence those controls are live. We implement them and give you the paperwork for renewals.