What to do if you’ve been in a data breach as a finance professional

What to do if you’ve been in a data breach as a finance professional

The finance industry is extremely susceptible to data breaches. In fact, in 2023, it was the most breached industry and accounted for 27% of all incidents handled by financial risk and advisory firm Kroll.

These breaches are also expensive. Indeed, financial companies lose an average of $5.9 million per breach, which is 28% higher than the global average. If you’re a finance professional and your data has been compromised, a swift and strategic response to any incursion is crucial.

In this post, we’ll outline the steps you should take (and the processes you need to be aware of) to do just that.

Step 1 - Contain the Data Breach

Once you have discovered a breach or suspect that one has occurred, immediate action should be taken to limit further damage. Resist the urge to solve the right problem right away. Instead, focus on containment and identify the security vulnerability that caused the breach.

This process involves several key steps:

  1. Isolate affected systems – if the breach involves workplace systems or financial platforms, isolate compromised accounts or devices from the network.

  2. Revoke access and reset credentials – disable access for compromised accounts by resetting login credentials. Revoke permissions and ensure only authorized users can access the account.

  3. Suspend suspicious activities – cease any transactions considered suspicious and contact other financial institutions to monitor and block potentially fraudulent activity.

  4. Implement a temporary freeze – a credit freeze or account suspension prevents unauthorized access to sensitive data, including your credit file. This applies to personal bank accounts, payment cards, and workplace systems.

  5. Liaise with IT and security teams – collaborate with IT and security teams to quarantine compromised systems, run diagnostics, and patch security vulnerabilities.

What’s more, be careful not to destroy any evidence that may hold the key to identifying the cause (or perpetrators) of the breach later.

Assess the Situation

When a data breach occurs, it’s essential to assess the situation quickly and accurately. This involves determining the scope of the breach, the type of data compromised, and the potential impact on individuals and organizations. To assess the situation, follow these steps:

  1. Identify the source of the breach: Determine how the breach occurred, whether it was due to hacking, phishing, or insider threats.

  2. Determine the type of data compromised: Identify the type of sensitive information that was stolen, such as personally identifiable information (PII), financial data, or confidential business information.

  3. Assess the scope of the breach: Determine the number of individuals and organizations affected by the breach.

  4. Evaluate the potential impact: Consider the potential consequences of the breach, including financial loss, reputational damage, and identity theft.

By assessing the situation quickly and accurately, you can take prompt action to mitigate the damage and prevent further unauthorized access to sensitive information.

Secure Your Operations

Securing your operations is critical to preventing further data breaches and protecting sensitive information. To secure your operations, follow these steps:

  1. Update passwords and PINs: Change passwords and PINs for all affected accounts, including financial accounts, online accounts, and mobile devices.

  2. Implement good password hygiene practices: Use unique and complex passwords, avoid reusing passwords, and change passwords regularly.

  3. Enable two-factor authentication (2FA): Require a second factor, such as a code sent to a mobile device or a biometric scan, in addition to a password to access sensitive information.

  4. Monitor accounts: Regularly monitor financial accounts, credit reports, and online accounts for suspicious activity.

  5. Use encryption: Use encryption to protect sensitive data, both in transit and at rest.

By securing your operations, you can prevent further unauthorized access to sensitive information and reduce the risk of identity theft and financial loss.

Step 2 – Verify the Breach

If you’ve received notification of a breach, it is important to verify the notification’s authenticity. This step can be performed in parallel with step one. This step is crucial for data breach victims to ensure they are taking the right steps to protect their information.

Why is verification necessary?

Scammers frequently use fake breach alerts in phishing scams. Therefore, it’s important to contact the entity involved (via official channels such as their customer service number or website) to confirm that the breach notification is authentic.

To verify whether your email has been compromised, you can also use Eftsure’s Data Breach Checker and receive additional tips and advice on how to protect data.

Step 3 – Assess the Breach of Sensitive Data

Step three involves assessing the data breach, whether it's a small incident or a massive data breach, to help understand the risks it poses and how those risks can be mitigated.

Gather as much information about the breach as possible and do so while the details are fresh.

Each assessment should cover:

  • The types of personal or company information compromised.

  • The circumstances, cause, and extent (if known) of the breach.

  • The nature of any harm to individuals or the business (such as data loss) and whether harm can be removed or reversed with remedial action.

Step 4 – Comply with Internal Reporting Protocols

All data breaches require swift internal communication to minimize the risk of further exposure, but this is particularly important in finance. This is particularly important in finance, where multiple data breaches can have compounded effects on both the organization and its clients.

Reports make management, legal, and security teams aware of the breach so that further action can be taken. The protocols themselves also clarify how breaches are documented, investigated, and reported to third parties.

The consequences of non-adherence can be immense. In 2017, credit agency Equifax suffered a data breach that exposed the personal details of around 163 million people.

Hackers worked for 76 days before they were detected, and when Equifax did discover the breach, it failed to comply with internal and external reporting protocols. The company was ultimately ordered to pay up to $425 million in damages to those impacted by the data breach.

Step 5 – Notify Affected Parties

Notifying affected parties is a critical step in responding to a data breach. This includes notifying individuals whose sensitive information was compromised, as well as relevant authorities and regulatory bodies. To notify affected parties, follow these steps:

  1. Identify affected individuals: Determine which individuals had their sensitive information compromised in the breach.

  2. Notify affected individuals: Notify affected individuals in writing, providing them with information about the breach, including the type of data compromised and the steps they can take to protect themselves.

  3. Notify regulatory bodies: Notify relevant regulatory bodies, such as the Federal Trade Commission (FTC) and state attorneys general, about the breach.

  4. Notify credit bureaus: Notify the three major credit bureaus (Equifax, Experian, and TransUnion) about the breach, and request that they place a fraud alert on affected individuals’ credit reports.

By notifying affected parties, you can help prevent identity theft and financial loss, and demonstrate your commitment to protecting sensitive information.

Step 6 – Monitor Accounts with Credit Monitoring

In step five, monitor the above-mentioned accounts for suspicious activity on an ongoing basis since criminals may wait weeks or even months before they act.

Reporting the breach promptly can help mitigate the risk of identity thieves exploiting the compromised information.

It may also be pertinent to monitor:

  • Personally identifiable information (PII) related to loan documents, identify verification, and client onboarding.

  • Financial systems, internal databases, and client accounts.

  • Corporate financial records and strategic financial plans.

  • Tax forms and other compliance-related documents.

Step 7 – Beware of Phishing Attacks Targeting Data Breach Victims

Phishing attacks are a common precursor to data breaches, but in some cases, the process is reversed.

After a data breach, compromised data may then be incorporated into targeted phishing attacks such as:

  • Spear phishing – where personalized emails or messages tailored to specific individuals persuade them to reveal sensitive information.

  • Whaling – a type of spear phishing where high-level executives and decision-makers are targeted. Emails may contain urgent requests for wire transfers from other executives to appear more credible.

  • Clone phishing – where criminals clone a legitimate email and make an identical version with malicious links or attachments. This is effective after a data breach since criminals know who you’ve been communicating with.

  • Business email compromise (BEC) – here, attackers compromise a legitimate business email account and use leaked information to pose as a colleague. Attacks then send fraudulent emails disguised as routine business requests.

Targeted phishing attacks are particularly dangerous after a data breach because they exploit the trust and familiarity associated with legitimate communications. This is why it's crucial to remain vigilant for suspicious activity in the period after a data breach.

Step 8 – Strengthen Cybersecurity Measures

Once a breach has been identified and properly remediated, the strengthening of cybersecurity measures becomes a priority.

1 – Update Firewalls and Antivirus Software

Cybercriminals often exploit outdated security devices to infiltrate networks, so keep your defenses current to block malicious activity.

In finance, robust firewall configurations and proactive malware detection are essential. Set up automatic updates for security solutions so that your details (and the business’s assets) are better protected against the latest threats.

2 – Training and Education

Training employees on cybersecurity best practices is essential to prevent future incidents. Staff should be encouraged to develop a security-first mindset that can:

  • Recognize phishing attempts.

  • Avoid risky online behavior.

  • Understand the importance of keeping software and systems updated.

Education also helps foster the sort of workplace culture where staff are encouraged to immediately report data breaches to their superiors.

To Sum Up

If you’ve been involved in a data breach as a finance professional, the importance of swift and decisive action cannot be understated.

Start by confirming the validity of the breach and check for compromised email addresses with Eftsure’s Breach Checker tool. Then it is a matter of changing passwords, enabling two-factor authentication, and monitoring the relevant accounts for suspicious activity.

Regularly check your credit report to detect any unusual activity and take prompt action if necessary.

In the aftermath of a breach, be wary of increased phishing activity and ensure that you’re following recognized internal and external reporting protocols.

By following these steps, you can play your part to protect the company’s assets and the personal information of its staff and customers.

Author

Bristol James

Published

3 Jun 2025

Reading Time

9 minutes

security-image

The New Security Standard for Business Payments

security-image
security-image