How CPAs Can Stay Protected During Tax Season

Tax season is the busiest — and riskiest — time of year for CPA firms. With client data flowing in from every direction, cybercriminals know this is the perfect moment to strike. Phishing attempts spike, fake IRS messages circulate, and attackers target firms that are stretched thin and moving fast.

The good news? A few practical steps can dramatically reduce your risk.

1. Lock Down Email — Your #1 Attack Surface

Most CPA breaches start with a single email click. Strengthen your defenses by:

• Enabling multi-factor authentication (MFA) for all staff

• Using a secure email gateway to filter malicious messages

• Training staff to spot IRS‑themed phishing attempts

2. Secure File Transfers

Tax documents should never be exchanged through email attachments. Use:

• Encrypted client portals

• Secure file‑sharing tools

• Password‑protected document links

3. Update Your Software Before the Rush

Attackers look for outdated tax software, old Windows versions, and unpatched systems. Schedule updates before tax season begins.

4. Review Access Controls

Only give staff access to the data they need. Temporary seasonal staff should have:

• Limited permissions

• No access to firm‑wide storage

• Automatic account expiration dates

5. Prepare an Incident Response Plan

If something goes wrong, you need a plan — not panic. A simple, clear response plan helps you act fast and minimize damage.

Final Thoughts

Tax season doesn’t have to feel like a cybersecurity minefield. With the right safeguards, CPA firms can stay protected, maintain client trust, and keep operations running smoothly.