On the surface, everything can look calm.
That is what makes Shark Week interesting every year. The danger is not what you see on top of the water. It is what is already moving underneath.
Cybercriminals work the same way.
For accounting firms, CPA practices, tax professionals, bookkeepers, payroll providers, and financial service organizations, the threats are often built to blend in. They look like normal client emails, routine document requests, payroll changes, tax notices, vendor invoices, password alerts, or quick questions from someone your team already trusts.
Then money moves. Client financial data gets exposed. Payroll records are accessed. Bookkeeping systems lock up. Financial statements are altered or stolen. And by the time the problem is obvious, the damage may already be done.
Tax season makes this worse.
Your team is moving fast. Deadlines are tight. Clients are sending sensitive documents from every direction. Staff members are approving requests, downloading files, accessing portals, and jumping between systems all day. Attackers know this, and they use it.
Even outside of peak tax season, firms across St. Louis, the Greater St. Louis region, and the Metro East deal with extension deadlines, payroll runs, monthly closes, bookkeeping cleanups, and advisory work. There is always a window where a rushed decision can become a cybersecurity problem.
Here are three risks circling accounting and financial service organizations right now.
1. Fake invoices, payroll changes, and client impersonation
Attackers do not always need to hack your network.
Sometimes they only need to send one email that looks believable.
This is called business email compromise, or BEC. It happens when a criminal pretends to be a client, vendor, executive, partner, payroll contact, or financial institution your team already knows.
The email looks normal. The wording feels familiar. The request seems routine.
A client asks to update direct deposit information. A vendor sends new ACH details. Someone requests a copy of financial statements. A business owner asks your team to release tax documents to a new contact. A payroll change comes in right before the deadline.
Someone processes the request, changes the bank information, sends the file, or approves the transfer. Later, the real client calls, and your firm finds out the request was fake.
These attacks increase during busy periods because the normal review process often gets loose. The person who usually handles payroll may be buried. A backup may not know what normal looks like. An urgent client message may get treated as a problem to solve instead of a risk to verify.
The fix is simple.
Create a verification process for any financial or sensitive data request that comes through email. If banking details change, if payroll information is updated, if a tax document request feels unusual, or if a client asks you to bypass the normal portal, your team should confirm it using a known phone number. Not the phone number in the email.
A two-minute call can stop a very expensive mistake.
2. Phishing attacks aimed at distracted employees
Phishing works because people are busy.
That is the whole strategy.
A staff member sees a password reset email and clicks the link. Someone gets a text that looks like it came from IT. A manager receives an urgent approval request right before a client meeting. A bookkeeper opens a file because the email came from a name they recognize.
In accounting, this is especially dangerous because your team works with attachments, portals, spreadsheets, PDFs, bank records, tax documents, payroll reports, and client financial data every day.
The attacker is counting on speed.
They want your people to react before they think.
Software matters, but the best protection is not only a tool. It is a culture where employees know they are allowed to slow down when something feels off.
Your team should pause when they see:
- An unexpected login request
- A payroll or banking change that came out of nowhere
- A link they were not expecting
- A document request outside your normal process
- A message that creates pressure or urgency
- A request to send client financial data by email instead of a secure method
Speed is a weapon attackers use against your firm.
Slowing down takes that weapon away.
3. Vendor and third-party access that is not being watched
Your firm may be secure, but what about the vendors connected to it?
If a vendor has access to your systems, data, email, cloud tools, tax software, bookkeeping platform, payroll system, document storage, or client records, their problem can become your problem fast.
This is supply chain risk.
Most firms have more of it than they realize.
Think about all the software tools your practice uses. Think about outside service providers with credentials. Think about contractors who helped with an implementation. Think about seasonal staff from last tax season. Think about old users that were never removed from bookkeeping systems, payroll platforms, portals, or shared drives.
Each one can become a path into your firm if it is not managed.
Outsourcing a service does not outsource responsibility.
You need to know the basics:
- Which vendors can access your client data or systems?
- What exactly are they connected to?
- Who inside your firm is responsible for that relationship?
- When was their access last reviewed?
- What happens if that vendor has an outage or security incident?
If those answers are not clear, your risk is not clear either.
And unclear risk is where problems start.
By the time you see the threat, it may already be moving
Sharks do not announce themselves.
Neither do the cybercriminals targeting accounting firms and financial service organizations.
The firms that get hit are not always ignoring obvious warning signs. Many of them believe everything is fine because nothing looks wrong on the surface.
That is the trap.
Client emails look normal. Payroll requests look routine. Vendor access looks harmless. Employees are just trying to get work done. Tax season feels too busy to stop and question every request.
Meanwhile, attackers are looking for the gap.
Cybersecurity is not just about preventing a bad day. It is also about business continuity. If your tax software, bookkeeping systems, payroll records, email, or document storage go down at the wrong time, the impact is immediate. Deadlines do not move just because your systems are unavailable.
For firms in St. Louis, the Greater St. Louis region, and the Metro East, the goal is not to make technology complicated. The goal is to protect client financial data, keep the firm operating, and give your team practical rules they can follow when things get busy.
At Tigerhawk, we help business owners and firm leaders get a clear picture of where they are exposed across people, vendors, email, devices, systems, and daily operations. Not with scare tactics. With practical steps that make sense for real businesses.
If you are not sure where your firm stands, now is a good time to find out.
For more information, schedule time with Tigerhawk.