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Updated Jun 28, 2025

What Every Accounting Firm Needs to Know About Cybersecurity Threats

Key Takeaways 

  • Accounting firms are more prone to cyberattacks, in which phishing scams are still one of the top threats. 
  • Ransomware attacks can block companies’ data until a ransom is paid.
  • Some cloud services require careful access control and secure connections to prevent data breaches. 
  • To avoid legal troubles, companies should stay compliant with applicable laws.
  • Finally, employees must be educated about cyber hygiene to prevent internal risk, along with external threats.

Cybercrime rates are also increasing with the evolution of the technical landscape. It was even predicted by service security ventures in 2017 that ransomware could cause damage to 5 billion dollars or more. It is very clear from the report how long cybercrime threats have been around.

And it could be more dangerous for accounting firms because they handle sensitive client data daily. From financial records to tax IDs, everything is done digitally. This also opens the door to Cyber threats to enter through phishing emails, ransomware, and insider mistakes.  

One mistake can result in data leaks or worse, financial losses, and reputation damage. That’s why it is high time to stay updated on common threats and utilize smart security tools in this article.

Scroll up and read the whole guide!

The Rising Threat of Phishing and Social Engineering

Among all the destructive threats, phishing remains one of the most successful ways criminals obtain access to the system. These attacks often arrive wearing the mask of normal emails or links, tricking employees into handling passwords or clicking on malicious files. 

In accounting firms, this can lead to unauthorized entry into client records or financial systems. So, educating employees about how to spot fake emails and setting up multifactor authentication can be the first layer of defense.

The Danger of Ransomware Attacks

After phishing, ransomware attacks have grown sharper and more invasive. In this, cyber criminals encrypt user files and demand a ransom payment to unlock them. If accounting companies lose access to client data during tax season or audits, this could be a disaster. 

Therefore, backing up data regularly and keeping the system updated can reduce the damage. Additionally, incorporating anti-malware tools that detect suspicious activity can also prevent these attacks before they lock out. To be on the safer side, companies can assess how Fortinet handles security vulnerabilities and seek support from them. 

This infographic flowchart depicts the different types of cyberattacks in the system.

Types of cybercrimes

Convenience with Caveats

Some cloud-based software and remote tools might have made processing easy for accountants. However, this convenience comes with caveats, causing harm to companies’ cybersecurity. In case cloud accounts are not properly secured, hackers can sneak in silently. 

These security concerns are rooted in weak passwords, outdated software, and unsecured Wi-Fi connections that can become backdoors for attackers. Firms should also secure VPNs, limit use, and regularly audit access ownership. Remember that any ease of access should never come at the cost of safety.

Today’s Trivia 
The first recorded cybercrime was the theft of the French telegraph in 1834, which was stolen by two individuals to access the financial market information. 
(Source: Arctic Wolf)

Regulatory Compliance and Cybersecurity Standards

Regulatory compliance with cybersecurity standards is as important as keeping client data safe in an accounting firm. For some cases, companies are also bound by laws like GDPR, SOX, and HIPAA to protect client data privacy and security. 

These regulations aim to force firms to take appropriate action in order to prevent data breaches. For this, the important steps must include maintaining a log, encrypting data, and conducting regular security checks. Falling short can lead to fines and loss of client trust, so the company must stay alert every time.

The Risks Within

Associated risks

While most accounting firms focus on external cybersecurity threats, the potential danger can also reside in the internal system. Since internal risks can be sourced from employees or even third-party vendors who have usage rights to the system. For example, former employees posing system access can intentionally leak or misuse information.

Additionally, firms also rely on external software providers, cloud storage, or IT service vendors. When these partners do not follow cybersecurity measures, they could become an easy target for hackers. To protect against these inside defaults, organizations should regularly update permissions and train employees about cyber hygiene.

In conclusion, cybersecurity is no longer an option for accounting firms, but a necessity. The companies must stay alert to both external threats and internal risks to avoid vulnerabilities. Ultimately, the client trusts the company more when they know their data is safe.

Frequently Asked Questions
Why are accounting firms a major target for cyberattacks?

Accounting companies handle sensitive financial data, which can be a gateway to other digital threats. For that reason, they are the major target for attackers.

What are the potential consequences of a cyberattack?

Cyberattacks can cause financial loss, reputation damage, legal liabilities, and other business disruptions.

How to analyze cybersecurity incidents?

Context, correlation, and causation are the three Cs of cybersecurity that help understand cybersecurity incidents.

How much does cybersecurity cost?

The cost generally varies depending on the size of the organization and its budget. It is estimated to be somewhere between 5.6% to 20% of the annual budget of the company.




Author - Suprabha Bhosale
Suprabha Bhosale

Finance Writer

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