Updated 14 October 2026.
Computer Services New Jersey (CSNJ) is an IT company in Holmdel, Monmouth County, supporting payroll and human resources firms across New Jersey and New York City. We protect the Social Security numbers, bank details and pay records you hold for other companies, stop direct-deposit change fraud, and keep your systems up on payday. Support requests are answered in 30 minutes or less, any hour.
What payroll and HR firms hold, and who wants it
A payroll or HR firm holds Social Security numbers, bank accounts and pay records for other companies’ people. That makes it a favorite target for phishing, account takeover and fake requests.
Outside the busy periods we use the quiet weeks for what cannot be done on a pay run: software updates, new devices and the clean-up of accounts and permissions.
Direct-deposit and payment-change fraud
The classic attack is an email that looks like it comes from an employee or a client contact asking to change a bank account before the next pay run. Software alone does not stop it. What stops it is a routine: every change to bank or direct-deposit details is confirmed by a call to a number you already hold, never one in the email, before anyone acts.
We help you write that verification step down, set up email security that blocks look-alike senders and compromised accounts, and brief staff on the signs. In tax season the same attackers send W-2 phishing, so we brief staff before January as well.
Payroll and HR software
Payroll and HR firms mostly run industry-specific apps delivered as a service, alongside accounting software and a document system. Each has its own sign-in, access rules and remote-access needs. We set up, secure and support access to the industry-specific apps your firm uses.
When payday cannot wait
A pay run has a hard deadline: people expect to be paid on time. If a system or the network fails the night before, our answer is a real person within 30 minutes, any hour, and monitoring that aims to catch a failing drive or an expired certificate before the day it matters. Backups are tested by restoring, so a failure never delays a pay run.
Where this fits with our other services
This page covers what is different for payroll and HR firms. For the services behind it, see our managed IT services, cybersecurity services and cloud backup.
Proof
CSNJ supports one of the biggest payroll and HR firms in New Jersey, based in Woodbridge. Our payroll and financial services case study shows the same kind of work: a payroll and financial services firm with offices in several states, where pay cycles cannot be interrupted, moved to a private network with no missed deadlines.
Find out where your firm stands, in one visit
Book a free IT assessment: your email, devices, network, backups and access controls, checked against how your pay runs depend on them.
Frequently asked questions
How do you help protect employee data?
With access limited by role, multi-factor sign-in, encrypted devices, tested backups and 24/7 monitoring, plus staff briefings so people can spot phishing and fake requests.
How do you help stop direct-deposit and payment-change fraud?
With technology and routine together: protected email that blocks look-alike senders, and a documented verification step, a call to a number you already hold, before any change to bank or payment details is acted on.
What happens if our systems go down before a pay run?
Call or use our Get Help page at any hour. We answer support requests in 30 minutes or less, with technical staff on call 24/7/365.
Do you support small payroll and HR firms as well as larger ones?
Yes. Support is available as flat-rate managed IT with unlimited monthly support, or as hourly and block support.
Do you support our payroll and HR software?
Yes. Most payroll and HR firms use industry-specific apps delivered as a service. We set up and support secure access to them, with multi-factor sign-in and access limited by role.
Related: Industries We Serve | IT support for accounting firms | law firms
