Law Firm IT Security: A Guide to Protecting Confidential Client Data

Client trust and confidentiality are important pillars of the legal profession. However, these pillars look very different now than they did just a few decades ago. Many legal clients prefer to partner with firms that have dedicated cybersecurity strategies to protect their sensitive data from breaches. 

Law firms are common targets for cybercriminals due to the valuable case data they collect, including intellectual property, medical records, financial details, and more. Data breaches can have severe consequences for your organization, including fines, legal penalties, and severe damage to your reputation.

Your firm can prevent these cyberattacks by implementing a strong IT and cybersecurity program. Partnering with a managed IT services provider like Diamond IT is an efficient and cost-effective option for law firms. In this article, we’ll highlight the steps law firms should take to protect their systems, stay compliant with industry regulations, and minimize cybersecurity risks.

Key takeaways

• Law firms are common targets for hackers due to the sensitive, valuable case data they work with.
• To protect against data breaches and cyber attacks, law firms need to implement cybersecurity strategies such as endpoint protection, access management, data backups, and encryption.
• Law firms also need to adhere to digital compliance and ethical standards to avoid regulatory consequences.

Why law firms are vulnerable to cyberattacks

Legal firms of all sizes are prime targets for cyberattacks. According to the American Bar Association, 42% of law firms have experienced data breaches as of 2024. Here are the reasons why law firms are so vulnerable.

Valuable data assets

When preparing cases, lawyers collect a wide range of sensitive information from their clients. This includes personally identifiable information like birthdays, addresses, Social Security numbers, or bank account numbers.

Depending on the type of cases they handle, lawyers might also collect healthcare records, intellectual property, or corporate financial documents. If it falls into the wrong hands, this sensitive information could help hackers launch devastating identity theft campaigns or other scams.

Ethical & regulatory obligations

Law firms have to adhere to strict legal and ethical standards. Failing to adhere to these standards could result in significant fines, legal action, and serious damage to a firm’s reputation. This means that a law firm data breach can be more damaging to the business than a data breach in another industry.

For example, lawyers need to maintain attorney-client privilege at all times and could be disbarred if they violate this ethical standard. Lawyers also need to adhere to HIPAA if working with medical data, and adhere to local data protection laws like the CCPA in California. International lawyers may also need to comply with Europe’s General Data Protection Regulation (GDPR). Violating these compliance standards can lead to significant fines from the government or industry regulatory bodies. 

Hacker perception

Hackers often perceive law firms as having weak security measures and assume they will be easy to target. This is because historically, many law firms have not invested in modern cybersecurity tools or best practices. For example, only 34% of law firms have an incident response plan.

Common attack vectors targeting law firms

Hackers use a number of attack vectors to access legal systems and steal confidential information. An attack vector is a pathway that hackers use to enter your systems. These include:

• Phishing and social engineering: This is the number one attack vector for law firms (and many other industries). 3.4 billion phishing emails are sent every day. Cybercriminals pose as trustworthy contacts and manipulate legal professionals into sharing sensitive personal data or business information.
• Ransomware: This malicious software is another common attack vector. Hackers place ransomware downloads in email attachments or on fake websites. Once the software is on your computer, it locks your legal files and demands a large sum of money for their return.
• Business email compromise: With this strategy, hackers intercept your firm’s emails or spoof emails from legitimate contacts. They will adjust the messages to facilitate wire fraud. Hackers often use this to target real estate deals or business sales.
• Insider threats: Sometimes, security threats come from inside your firm. A disgruntled employee could expose confidential information, or a well-meaning employee could make an error that leads to a security breach.
• Supply chain attacks: Hackers can target law firms by attacking the vendors they work with. For example, a hacker might target a case management software platform to steal data from multiple firms at once.

Core pillars of law firm IT security

To prevent law firm data breaches and cyber attacks, you’ll need to adhere to cybersecurity and data security best practices across every aspect of your operations. Here are the core pillars of law firm cybersecurity to adhere to when building your strategy.

Robust access control & identity management

Since privacy is so important for law firms, you’ll need to make sure that only authorized users can access your systems. Use the following security measures to prevent unauthorized access to your systems:

• Strong password requirements: Require all system users to create complex passwords that hackers will not be able to guess. Make sure passwords include combinations of uppercase and lowercase letters, numbers, and symbols.
• Multi-factor authentication: Require your team to implement MFA on all logins, including email accounts, cloud-based software, and more. MFA provides an extra layer of security to keep your accounts safe, even if your password is compromised.
• Role-based access: System access levels should be directly correlated with each employee’s role. For example, an administrative assistant shouldn’t get access to the same case data as a high-level lawyer.
• Principle of least privilege: Employees should only have access to the parts of your system they need to do their jobs.
• Access audits: Conduct regular audits to make sure that each employee’s system permissions are appropriate for their job. Increase or revoke access as needed when roles change.

Comprehensive endpoint security

Many cyber attacks start with an attack on an endpoint, or an individual device used to access your network.

You’ll need to take steps to protect the computers and mobile devices your legal team uses to access data. This is particularly important if your team works remotely or if your organization has a bring-your-own-device policy. Here’s what you can do to keep your endpoints safe:

• Next-gen antivirus and EDR: Modern EDR software helps your IT team track activity across all devices connected to your network and respond to possible threats before they spread to other devices.
• Full disk encryption: Implement full disk encryption on all devices used to manage company data. This ensures that threat actors can’t access sensitive data if the device is stolen.
• Mobile device management: Your IT team should use mobile device management software to ensure that company smartphones and tablets remain compliant.
• Regular software patches and updates: Require all team members to install software patches and updates as soon as they are available to limit system vulnerabilities. Patch management tools can help automate this process.

Network & cloud security

In addition to protecting your devices, you’ll also need to take steps to keep threat actors from entering your network and cloud data storage systems. Here’s what your firm can do to limit network-based threats:

• Advanced firewalls: Use updated firewalls to filter out abnormal web traffic associated with security threats.
• Intrusion detection and prevention systems: These software programs monitor and block malicious activity on your networks.
• Secure wi-fi networks: Make sure your office internet networks are secured with a strong password. Consider creating two separate networks for employees and visitors.
• Virtual private networks (VPNs): If employees are working remotely, require them to use VPNs to encrypt their web traffic and minimize the risk of data breaches.
• Cloud security posture management: Use CSPM tool to keep your cloud-based software programs configured properly.

Data encryption & secure communication

Data encryption is necessary for both security and compliance. Encryption uses cryptography to prevent unauthorized users from reading your data. This way, even if a hacker intercepts your communications, they won’t be able to read them.

Data should always be encrypted at rest, whether it’s in on-premise servers, cloud storage, or any other data backups. You should also use encryption to protect data in transit. This includes encrypting your website with an SSL/TLS certificate, encrypting sensitive emails, and using secure file transfer tools. 

Popular encrypted file sharing services include WeTransfer, Box Business, and pCloud. These tools are particularly helpful when sharing sensitive client information, such as court documents or legal correspondence. Many corporate messaging platforms also offer encryption options, such as Slack and Microsoft Teams. 

There are also several dedicated client communication platforms for the legal industry, such as Clio and MyCase. These platforms encrypt data both in transit and at rest to protect all client communications. 

Data backup & disaster recovery

Security incidents can happen to even the most vigilant law firms, so your team will need to conduct regular data backups and have a disaster recovery plan in place.

All data should be backed up regularly to an off-site server that’s separate from your primary data storage systems. Your backup systems should be tested regularly to make sure they’re working properly.

Your team should also have a plan in place to recover the data and get your systems up and running again in the event of a security incident. Your disaster recovery plan will serve as the last line of defense in the event of a ransomware attack, as you’ll still have access to the backup files even if the original versions are locked. Data backups will also protect your law practice in the event of a natural disaster that damages your primary servers.

Employee security training

All law firm employees should be trained on cybersecurity and compliance best practices, regardless of their role in the organization. 95% of data breaches stem from human error, highlighting just how important it is to invest in employee cybersecurity training. 

Host regular training sessions covering topics like phishing, password management, and secure remote work. Use quizzes or even simulated phishing attacks to test employee preparedness and identify areas that could use more training.

Additionally, you’ll need to create clear cybersecurity policies and distribute them to all employees. These policies should provide clarification about common security concerns like client data handling and remote system access. Your policies should also instruct employees on how to report security concerns when they arise.

Incident response planning

Create a detailed incident response plan that outlines what your organization will do in the event of a cyber attack or other security incident. Everyone in your firm should be familiar with the response plan so you can take action right away if something happens. This document should specify exactly who does what, and the order in which steps should be taken.

Your incident response plan should align with your firm’s overall security policies to ensure consistent and compliant actions during a cyber event.

Generally, incident response will start with containing the threat and resecuring your systems. Then, you’ll need to restore any data that was lost during the attack from your backup systems. Finally, you’ll need to send breach notifications to clients and regulatory bodies and follow established compliance procedures.

Staying Compliant and Ethical with IT Security

Law firms must develop proactive compliance strategies to ensure that systems adhere to applicable regulations and ethical standards. These include:

• ABA confidentiality standards: Law firms are required to maintain client confidentiality at all times. In 2017, the ABA released Formal Opinion 477R, which specifies that lawyers should take steps to maintain client confidentiality when transmitting information online.
• HIPAA: Many legal cases include health data. Law firms are required to follow HIPAA standards when working with protected health information.
• Financial privacy laws: Depending on the data a law firm collects, it will need to adhere to relevant financial reporting standards, such as SOX, GLBA, or PCI DSS.
• Local data privacy laws: Many countries, states, and cities have laws specifying the security measures businesses should take to protect their customers’ personal information.

Compliance violations can be devastating for law firms, especially if they result in a breach of client data. Depending on the type and severity of the violation, they can lead to fines, legal action, or even disbarment.

Partnering with Diamond IT for uncompromised law firm security

Busy law firms don’t always have the time or resources to handle cybersecurity on their own. If that’s the case for your firm, consider partnering with a managed services provider like Diamond IT.

At Diamond IT, we serve as your IT, cybersecurity, and compliance partner. We handle the tasks you don’t have the time or expertise to tackle in-house, such as system monitoring, data backups, or security training. We’ll also help you build and maintain an IT setup with appropriate data security, cybersecurity, and compliance measures.

We’re familiar with the unique IT needs and challenges that law firms face. Our team will get to know your business and make appropriate cybersecurity recommendations based on your needs. Let Diamond IT handle your law firm’s cybersecurity. Schedule your free assessment today.