March 17, 2026
It’s March.
Your accountant is buried. Your bookkeeper is under pressure. Deadlines are fixed. Volume is high. Communication is constant.
Everyone is focused on execution.
That is not new to you.
It is not new to threat actors either.
Security data consistently shows a measurable increase in tax-themed phishing activity during this time of year. March regularly brings a significant spike in impersonation emails, fraudulent document requests, and payment redirection attempts.
That is not coincidence.
It is exploitation of predictable pressure.
Here is what is actually happening, and how to ensure your organization is not the easiest target in a busy ecosystem.
The Stressed Supply Chain
Most leaders assume accounting firms are the primary targets during tax season.
In reality, attackers target the entire ecosystem around them.
When reporting deadlines approach:
- Clients transmit sensitive financial documents
- Teams accelerate workflows
- Verification steps feel inconvenient
- “Just send it” replaces “Let’s confirm it”
- Speed overtakes scrutiny
The system moves faster.
And acceleration increases exposure.
Attackers do not prioritize calm, structured environments.
They prioritize urgency.
March is built on urgency.
What These Attacks Actually Look Like
There is no dramatic breach scenario.
There is an email.
It looks routine. It reads professionally. It matches the season.
- A message appearing to come from your accountant requesting W-2s again because “the file was corrupted.”
- A vendor notification stating updated banking information is required immediately.
- A DocuSign request for a tax document “due today.”
- An urgent internal message from leadership requesting immediate action while traveling.
None of these feel unusual.
They feel operational.
That is precisely why they succeed.
Why High-Performing Teams Still Get Caught
This is not about negligence.
It is about cognitive load.
When inbox volume increases and timelines compress, teams shift from deliberate review to rapid response.
They skim.
They assume continuity.
They act efficiently.
Attackers design campaigns specifically for this behavioral shift.
They do not need recklessness.
They need distraction.
Busy organizations present opportunity.
Four Practical Controls That Reduce Exposure
You do not need an enterprise security department to materially lower risk during peak seasons.
You need discipline in predictable pressure points.
1. Verify Payment Changes by Voice
Any request to update vendor banking information should be confirmed verbally using a trusted, previously verified phone number.
Do not reply to the original email.
This single control has prevented some of the largest financial losses organizations face.
2. Slow Down Requests for Sensitive Data
Urgency is not a reason to accelerate.
It is a signal to validate.
If W-2s, tax documents, payroll data, or financial reports are requested urgently, pause and confirm authenticity through an independent channel.
Legitimate partners will respect verification.
Fraudulent actors rely on bypassing it.
3. Require Dual-Channel Confirmation for “Urgent” Leadership Requests
If an email claims to be from a senior leader requesting immediate assistance, confirm it through a secondary method.
Call.
Text.
Message internally.
Real urgency tolerates verification.
Impersonation does not.
4. Proactively Address the Risk with Your Team
Five minutes of leadership communication can materially reduce exposure.
Remind your team that:
- Tax season increases phishing attempts
- It is acceptable to slow down
- Verification is encouraged, not penalized
- Questions are preferable to remediation
Cultural permission to pause is a powerful control.
The Takeaway
Tax season pressure is predictable.
So are the attacks that accompany it.
These campaigns are not exceptionally sophisticated.
They are strategically timed.
They rely on:
- Volume
- Distraction
- Compressed timelines
- Assumed legitimacy
You do not need to overhaul your infrastructure to reduce risk this month.
You need structured habits under pressure.
That is often sufficient to prevent a preventable event.
A Quick Busy-Season Sanity Check
Your organization may already have structured payment verification, phishing awareness, and defined escalation procedures. If so, that reflects operational maturity.
If tax season pushes your team into reactive mode, or if you are uncertain how urgent financial requests are validated, that is common and addressable.
A brief discovery conversation can clarify whether your current safeguards meaningfully reduce exposure or rely too heavily on individual vigilance.
No alarmism. No theatrics.
Just a clear assessment of whether predictable seasonal pressure creates predictable vulnerability.
If this does not apply to you, forward it to a colleague who may be navigating March at full speed.
