Cybersecurity for Accounting Firms in Peoria, Arizona
Tax preparers are a target because the data is uniquely monetizable: Social Security numbers, EINs, bank routing details and prior-year returns in one place. The Peoria firms we assess usually have antivirus and a cloud backup, and almost never have the written information security plan, enforced multi-factor authentication, vendor inventory and documented incident response that IRS Publication 4557 and the FTC Safeguards Rule actually require.
We build the full program and, just as importantly, the evidence file. Written information security plan, annual risk assessment, MFA enforced across the entire tax stack, managed endpoint detection and response with 24/7 monitoring, immutable backups with tested restores, an IRS data-theft response plan mapped to Arizona A.R.S. section 18-552 notification timelines, and an annual tabletop with your partners. When the IRS Stakeholder Liaison, your cyber carrier or a client asks for proof, you send a folder instead of drafting one under pressure.
Why It Matters
Why Cybersecurity Matters for Accounting Firms in Peoria
A written information security plan is a condition of holding an EFIN
Publication 4557 requires it, PTIN renewal affirms it, and a Peoria firm without a current plan is one phishing click away from an e-file privilege problem in the middle of the season.
CPA firms are financial institutions under the FTC Safeguards Rule
That means a designated qualified individual, a documented risk assessment, MFA, encryption, access reviews, vendor oversight and incident reporting, not a general sense that IT is handled.
Wire and refund fraud starts with a convincing email
Attackers impersonate partners and clients to redirect refunds and vendor payments. Anti-impersonation controls plus a written verification procedure stop the loss that technology alone will not.
Cyber insurance renewals now require documented controls
Carriers want MFA everywhere, EDR with monitoring, immutable backups and a tested incident response plan before they will quote a tax practice. We build the controls and hand you the attestation package.
What's Included
Cybersecurity Scope for Peoria Accounting Firms
Written information security plan (WISP)
Mapped to IRS Publication 4557, the FTC Safeguards Rule, GLBA and Arizona A.R.S. section 18-552, reviewed annually and written to be handed to a regulator, insurer or client.
Annual risk assessment with an evidence file
Every system touching taxpayer data assessed, with prioritized remediation, named owners and proof that each control is operating.
MFA across the entire tax stack
Enforced on hosted tax software, Microsoft 365, the client portal, QuickBooks, payroll and banking, with conditional access and quarterly access reviews.
Email security tuned for filing season
Advanced phishing protection, partner impersonation defense, attachment sandboxing, external sender banners, DMARC, DKIM and SPF enforcement, plus a written payment-change verification procedure.
Managed EDR with 24/7 monitoring
Behavioral detection, ransomware rollback and endpoint isolation within minutes when a preparer opens a poisoned attachment at 11 p.m. in March.
Encryption and data loss prevention
Full-disk encryption, encrypted client deliverables, and DLP rules that flag Social Security numbers and EINs leaving the firm without authorization.
Immutable backups with quarterly restore tests
Encrypted, immutable retention across Microsoft 365, tax data, QuickBooks files and the document portal, with restore logs your carrier will accept.
Incident response plan and annual tabletop
Plain-English plan including the IRS data-theft workflow, Arizona notification timelines, client communication templates and a live exercise with your partners each year.
Local Proof
Built for the Peoria Accounting Firms Reality
Built to the standards that apply to preparers
Our control mapping targets IRS Publication 4557, the FTC Safeguards Rule and GLBA specifically, rather than a generic small-business security checklist.
Experience with IRS data-theft reporting
We have walked Arizona preparers through the Stakeholder Liaison reporting workflow, so the timelines and templates already exist if your firm ever needs them.
Local incident response in the West Valley
For an active event at an Old Town Peoria, P83 or Arrowhead office, we can be on site quickly rather than queued behind a national operations center.
Related Pages
Explore the Peoria Accounting Firms stack
FAQs
Cybersecurity questions Peoria accounting firms ask
Ready for a security program the IRS, your carrier and your clients will all accept? Let's spend 15 minutes on your Peoria firm.
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