
Most small business owners keep a close eye on the money coming in: when invoices are paid, the balance before approving expenses, and estimates around cash flow.
But far fewer founders pay the same attention to how fast money can leave.
In the UK, 43% of businesses reported experiencing a cyber breach or attack in the last 12 months. The picture is similar in the U.S., where 41% of small businesses were victims of a cyberattack, according to a survey referenced by the Small Business Administration.
And when these incidents happen, the financial impact can be severe. According to Aligned Insurance*, the average cost of a cyberattack on a small business ranges between $120,000 and $150,000. Some cases cost far more once downtime, recovery, and disruption are added in.
The financial impact of a cyberattack rarely shows up as a single expense. According to figures shared by Aligned Insurance, some costs hit immediately, while others surface over time, putting pressure on a business long after the incident itself.
Direct costs: what you pay right away
Indirect costs: what lingers after the incident
Beyond the immediate bills, cyberattacks create knock-on effects that are harder to measure.
Almost every financial scam begins with access. Access to your email means access to invoices, conversations, and approval chains. Access to your accounting software means access to payment details and vendor information. Access to payment platforms or business cards means direct control over money movement.
Whoever controls access controls where the money goes.
1. Invoice scams. You pay the right amount to the wrong place. These scams often involve compromised supplier emails or carefully recreated invoices, and once the payment is sent, recovery is rare.
Related: What Are Invoice Scams and How Small Business Can Stay Safe
2. Business Email Compromise. This type of scam relies on impersonation. An urgent message appears to come from you, a partner, or someone in authority, pushing for a quick, “confidential” payment.
Related: How to Prevent or Recover from A Business Email Compromise (BEC) Attack
3. Bank detail change scams. Payment details are quietly updated, redirecting future payments to a different account.
Related: The One Email Every Small Business Should Be Afraid Of: “Please Urgently Update Our Bank Details.”
4. Account takeovers. Once inside, attackers monitor activity, change settings, and hide alerts, allowing money to leave in small or staged amounts.
Related: What Is Account Takeover (ATO) And How to Protect Against It
5. Payment platforms and business cards. Attackers often begin with small test charges, then increase withdrawals over time. Because the amounts start small, the pattern is easy to miss.
Related: 7 Types of Credit Card Fraud & How Your Businesses Can Avoid Them
6. Social engineering. Some scams rely on convincing phone calls or messages that create urgency and guide victims step by step. These tactics work because they target trust, not technology.
Related: How Hackers Use AI to Target Small Businesses.
Small businesses can reduce risk by protecting the few places where money actually moves: email accounts, devices, accounting tools, and payment platforms.
Bitdefender Ultimate Small Business Security is built for very small businesses that don’t have dedicated IT support. In practical terms, it helps by:
Everything is managed from a single, easy-to-use dashboard, without technical setup or ongoing maintenance. Plans start at around $180 per year, making it accessible for very small teams.
Find out more and protect the money coming into your business.
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Cristina Popov is a Denmark-based content creator and small business owner who has been writing for Bitdefender since 2017, making cybersecurity feel more human and less overwhelming.
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