Email Security for Disinformation: Protecting Your Business from Malicious Campaigns

In the digital age, email remains one of the primary communication tools for businesses. However, as email communication has evolved, so have the threats that target it. One of the most dangerous threats businesses face today is disinformation, spreading false or misleading information through email. These disinformation campaigns can take many forms, from phishing and spam emails to more sophisticated attacks designed to damage a company’s reputation or cause financial harm.

In this blog post, we will discuss the importance of email security for disinformation, the risks involved, and the best practices and solutions to protect your business from these threats.

Why is Email Security Crucial for Disinformation?

Email is often the first line of attack in disinformation campaigns. Malicious actors can use email to:

• Distribute fake news or rumors: Attackers can send false or misleading information targeting employees, customers, or business partners.
• Impersonate company executives: Phishing emails designed to look like they come from a senior executive (CEO, CFO) can manipulate employees or partners into taking harmful actions, such as transferring funds or sharing sensitive information.
• Spread malware or ransomware: Malicious emails can include attachments or links that introduce malware, which can corrupt your systems and steal sensitive data.
• Exploiting social engineering tactics: Attackers may use email as part of a broader social engineering attack, leveraging false narratives or urgent requests to convince recipients to act against their best interests.

Given email’s critical role in modern business operations, protecting your organization from email-based disinformation is paramount. The right security measures can help prevent these types of attacks from succeeding and mitigate potential damage.

Key Email Security Measures to Combat Disinformation

Spam Filters and Phishing Detection

One of the most effective ways to stop disinformation is to prevent malicious emails from reaching your inbox. Robust spam filters and phishing detection tools can help identify and block harmful emails before they reach your employees.

• Spam Filters: These tools automatically classify and block emails that are likely to be spam or contain malware.
• Phishing Detection: These tools help identify phishing emails that may contain malicious links, misleading information, or harmful attachments.

Many of these tools also flag suspicious emails or emails containing deceptive tactics, making it harder for disinformation to penetrate your company’s communication channels.

Case Study: We provided an Enterprise Email Security Solutions Engineer to support the end-to-end security for our government entity client’s email platform, Exchange running O365 on Azure.  Our consultant provided technical leadership and direction to support the implementation of Symantec Messaging Gateway (SMG) solutions and served as the subject matter expert for end-point security solutions for email protection. 

Email Authentication Protocols (SPF, DKIM, DMARC)

Implementing email authentication protocols helps prevent attackers from impersonating your organization and sending misleading information via email. These tools help verify that incoming emails are actually coming from the sources they claim to be from, significantly reducing the chances of email impersonation.

• SPF (Sender Policy Framework): SPF checks if incoming emails are sent from authorized mail servers.
• DKIM (DomainKeys Identified Mail): DKIM adds a digital signature to emails, verifying that the content hasn’t been tampered with.
• DMARC (Domain-based Message Authentication, Reporting, and Conformance): DMARC helps domain owners protect against unauthorized use of their domain, preventing malicious actors from sending emails pretending to be from your business.

Implementing SPF, DKIM, and DMARC reduces the risk of disinformation by ensuring that only legitimate emails are delivered, protecting your brand’s identity and email communications.

Case Study: We provided an MS Exchange Email Administrator for our client, a full-service voice and data network engineering firm, to support an on-premise exchange to a Cloud O365 environment. Our consultant implemented email security protection, including TLS, Digital Signatures, Phishing and SPAM prevention, SPF, DKIM, and DMARC.

Employee Training in Email Security and Disinformation

While technology can help block malicious emails, human error remains a significant vulnerability. Regular employee training is essential to ensure that everyone in your organization understands how to spot disinformation and fraudulent emails.

• Phishing Simulation Tests: Use simulated phishing attacks to train employees to recognize the signs of suspicious emails. Services like KnowBe4 or PhishMe offer training programs to educate employees about handling malicious emails and their associated risks.
• Disinformation Awareness: Train employees to recognize the signs of disinformation campaigns, such as unrealistic or sensational claims, misleading headlines, or urgent requests. Teach them to always verify information before acting.

The more employees are aware of the tactics used in disinformation campaigns, the less likely they are to be victims.

Advanced Email Encryption

Email encryption helps protect sensitive information if emails are intercepted or sent to the wrong recipient. It also ensures that the content of your email cannot be altered or tampered with during transmission, which is critical when preventing the spread of false information.

• TLS (Transport Layer Security): This technology ensures that emails are encrypted during transit, preventing them from being intercepted.
• End-to-End Encryption: For highly sensitive communications, end-to-end encryption ensures that only the sender and recipient can read the message, preventing anyone in between (including hackers) from altering or accessing the content.

Encryption can ensure that disinformation is not introduced or altered in your organization’s email communications.

Case Study: We provided a Cisco Ironport Email Gateway Administrator for our government entity client. Our consultant worked with Cisco Ironport, creating, modifying, and maintaining email policies focusing on threat mitigation, spam reduction, malware/ransomware prevention, and email encryption. 

Automated Threat Intelligence and Real-Time Monitoring

Leveraging automated threat intelligence tools can help you stay ahead of emerging disinformation tactics and identify potential risks in real-time. These tools can analyze large volumes of email data, looking for patterns or signs of phishing, disinformation campaigns, or suspicious activity.

• Proofpoint Email Protection: Proofpoint provides real-time email threat intelligence, which helps businesses identify and protect against advanced threats like business email compromise (BEC) or phishing attacks designed to spread disinformation.
• Barracuda Email Protection: Barracuda’s AI-driven solutions can identify and block phishing emails, preventing malicious content from being sent to your employees or customers.

These tools can help ensure that email-based disinformation is detected and blocked before it causes harm.

Case Study: ClearBridge recently provided multiple Email Security Consultants to support a Proofpoint Configuration project for our client.  Our consultants assisted with the migration to O365 in a secure environment and configured ATP, TRAPS and Email Fraud Defense. 

Incident Response to Plan for Disinformation Attacks

A well-defined incident response plan is crucial when a disinformation campaign breaches your email system. Your plan should include clear steps for:

• Identifying and assessing the scope of the attack.
• Containing the spread of disinformation.
• Communicating with affected employees, customers, and partners.
• Reporting the incident to relevant authorities if necessary.

An effective response can limit the impact of a disinformation campaign and prevent further damage to your company’s reputation.

Case Study: We provided an Incident Response Director responsible for driving the creation and build of a Cyber Security Incident Response Center (CSIRC). Our consultant conducted an in-depth network security analysis, including incident response, event analysis, and threat intelligence, and provided technical expertise, training different organizations on Incident response processes and building out a Cyber Security Incident Response Team.

Conclusion: Staying One Step Ahead

As the threat of disinformation grows, securing your email system is crucial to protecting your business. Implementing email security protocols, training employees, and using advanced threat detection technologies can reduce the risks associated with email-based disinformation campaigns.

Remember, while no system is entirely foolproof, adopting a multi-layered approach to email security—combined with awareness and vigilance—will help safeguard your business from the potentially devastating consequences of disinformation.

In an era when the line between fact and fiction can be hard to discern, being proactive about email security is not just an IT concern, it’s a fundamental aspect of protecting your brand, employees, and customers from harm.