Phishing Red Flags CPA Firms Should Watch for During Tax Season

Learn the most common phishing red flags that target CPA firms during tax season and how to reduce the risk of fraud, ransomware, and client data exposure.

Why tax season creates more risk

During tax season, CPA firms are moving fast, handling sensitive client records, and receiving a high volume of emails, attachments, and requests. That pressure gives attackers an opening. A single phishing email can lead to stolen credentials, wire fraud, malware, or ransomware that disrupts your busiest time of year.

Common phishing lures CPA firms see

1. “Urgent” client requests asking you to review an attachment or update banking details right away.
2. Fake tax documents disguised as PDFs, ZIP files, or shared links.
3. IRS or government lookalikes using alarming language to trigger quick action.
4. Password expiration emails that send users to fake Microsoft 365 or webmail login pages.
5. Vendor impersonation asking for invoice changes, ACH updates, or payment confirmation.

The red flags your team should slow down for

1. Unexpected attachments or links from people you were not actively working with.
2. Slightly misspelled domains that look close to a real client or vendor email address.
3. Pressure tactics like “immediately,” “today only,” or “do not call.”
4. Requests to bypass normal process for payments, payroll, or tax record delivery.
5. Login prompts that appear out of nowhere when opening a shared file or email link.

How CPA firms can reduce the risk

Start with the basics: enable MFA on email and tax-related systems, use advanced email filtering, train staff to verify unusual requests by phone, and keep endpoints patched. Just as important, make sure your backups are protected and tested so one bad click does not become days of downtime during a critical filing window.

A simple rule for busy teams

If an email involves money, credentials, tax documents, or urgency, slow it down and verify it. That extra minute can prevent a much bigger problem for your firm and your clients.

Need a quick tax season risk check?

If you're a CPA firm in Raleigh, Wake Forest, or the surrounding area, VisCore IT Solutions can help you identify the biggest email and security gaps before they turn into downtime. We offer a free 20-minute IT & Security Assessment with no system access required.

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