Tax Season = Hacker Season: How Small Businesses Get Targeted in Q1
Tuesday, March 3, 2026
It looked like it came from your accountant.
The subject line said:
“Updated W-9 – Please Review Before Filing.”
You’re juggling payroll. Your bookkeeper is asking questions. Deadlines are looming. You click.
That’s exactly what attackers are counting on.
Every year, as small businesses prepare taxes, hackers quietly ramp up their attacks. More financial activity. More document sharing. More urgency. More distraction.
Tax season isn’t just busy.
It’s prime time for cybercrime.
Why Q1 Is So Attractive to Hackers
Small businesses move more sensitive information in the first quarter than almost any other time of year:
Payroll reports
W-2s and 1099s
Bank statements
Vendor payments
Updated financial documents
Accountant communications
There’s money moving. There’s urgency. There’s trust between partners.
And where there’s urgency and trust, attackers look for shortcuts.
Small businesses are especially vulnerable because most teams:
Don’t have a dedicated security staff
Rely heavily on email
Reuse passwords across tools
Don’t actively monitor for compromised credentials
Assume “we’re too small to be targeted”
Unfortunately, attackers don’t see “small.” They see “less protected.”
The 4 Most Common Tax Season Attacks on Small Businesses
Let’s break down what we see most often in Q1.
1. Fake IRS or Government Emails
These messages look official. They reference deadlines, penalties, or “missing information.” They often include:
A PDF attachment
A link to “verify your EIN”
Instructions to update payment information
One click can install malware or steal login credentials.
Modern email threats are sophisticated. They can mimic real domains and language almost perfectly.
That’s why advanced filtering and real-time scanning matter — before an email ever hits an employee’s inbox. (This is exactly what Lockwell’s Email Firewall is built to do. )
2. Payroll Diversion Scams
This one is simple, and incredibly effective.
An email appears to come from an employee:
“Hey, I need to update my direct deposit info before payroll runs.”
The sender name looks correct. The timing feels urgent. The request seems routine.
Except the bank account belongs to a criminal.
Without verification protocols in place, businesses can lose thousands in a single payroll cycle.
Tax season makes these scams even more convincing because payroll changes and financial updates are common.
3. Accountant Impersonation Attacks
Attackers often monitor businesses for months before striking.
They watch social media. They learn your vendors. They identify your accounting firm.
Then they send a perfectly timed message:
“We need a copy of last year’s filings for reconciliation.”
Or they spoof a domain that looks nearly identical to your accountant’s website.
Domain monitoring and threat intelligence can detect suspicious activity before it escalates. (This is where continuous breach monitoring and scanning become critical. )
4. Compromised Email Threads
This one is especially dangerous.
An attacker gains access to one account — often through a reused password. Then they quietly sit inside real email conversations.
When tax discussions start, they insert themselves naturally into the thread.
The email looks legitimate because it is part of a real thread.
Without monitoring, businesses may not realize someone else is reading and manipulating sensitive financial conversations.
Why Small Businesses Get Hit Harder
Large enterprises have layered security teams and formal verification procedures.
Small businesses often rely on:
Trust
Speed
Informal processes
“We’ve always done it this way”
That’s not negligence. It’s reality.
But attackers exploit simplicity.
And recovery is harder for small teams:
Lost funds impact cash flow immediately
Downtime stalls operations
Client trust is fragile
Insurance claims are complicated
A single phishing click during tax season can ripple through your entire year.
How to Protect Your Business Before April 15
The good news? You don’t need a full IT department to reduce your risk.
Here’s a simple Q1 protection checklist:
1. Turn on Advanced Email Filtering
Make sure malicious links and attachments are scanned before employees see them. (This is core to Lockwell’s Security Tools. )
2. Require Multi-Factor Authentication (MFA) Everywhere
Especially for:
Email
Payroll systems
Banking portals
Accounting software
3. Monitor for Compromised Passwords
Dark web exposure happens more often than businesses realize. If employee credentials appear in a breach, you should know immediately.
4. Verify All Financial Change Requests Verbally
If someone requests:
Direct deposit updates
Vendor payment changes
Bank detail modifications
Call them using a known number. Not the one in the email.
5. Review Active User Accounts
Are there former employees still with access? Inactive accounts increase risk.
Tax Season Shouldn’t Turn Into Breach Season
You already have enough on your plate in Q1.
Taxes.
Payroll.
Financial planning.
Cash flow.
Your cybersecurity shouldn’t add stress — it should remove it.
The reality is simple:
Hackers know small businesses are busy this time of year.
They know urgency lowers guardrails.
They know email is still the primary gateway into companies.
The businesses that stay secure during tax season aren’t the biggest ones.
They’re the ones who assume someone will try — and prepare accordingly.
Before April 15 arrives, take 30 minutes to review your defenses.
Because the email you almost clicked?
Next time, it might not look suspicious at all.
