Secure Business Email Against Conversation Hijacking
EnGarde Cloud Email Security Keeps Hospitality Companies
Ahead of The Latest Threats

What Is Conversation Hijacking?
Conversation hijacking is a type of targeted attack in which threat actors insert themselves into a business email conversation and pose as one of the participants using information they’ve gathered from compromised email accounts or other sources. In some cases, cybercriminals will also initiate new conversations. Conversation hijacking is typically, but not always, part of an account takeover (ATO) attack. The objective is usually to gain access to confidential resources by stealing login credentials, to dupe the victim into sending money to the attackers’ account, or to trick the victim into opening a malicious attachment or following a link to a fraudulent site. These highly personalized, well-researched attacks are growing in popularity because they are effective, difficult to detect, and profitable for attackers. Businesses have a lot to lose in a successful conversation hijacking attack, including data theft, financial loss, and severe, lasting reputational harm.
How Does Conversation Hijacking Work?
The majority of conversation hijacking attacks occur in the following phases:
Attackers Use Phishing Scams to Compromise Business Accounts
Cybercriminals use phishing attacks to deceive users into sharing sensitive login credentials that can be used to compromise business accounts and access confidential information. These phishing scams often employ stealthy social engineering tactics to manipulate psychology, and malicious links leading to fraudulent login pages designed to harvest credentials.
Cybercriminals Monitor the Compromised Account & Research the Target Organization
Threat actors then spend time reading through emails and monitoring the compromised account to gain key insights into the business's operations and access confidential information, including deals in progress, payment procedures, and other sensitive details. This information can be used to create highly personalized and difficult-to-detect attacks.
Threat Actors Trick Victims into Wiring Money or Updating Payment Information
Attackers leverage the information they have gathered, including conversations between employees, partners, and customers, to craft convincing messages. They then send these messages from impersonated domains to trick victims into wiring money or updating their payment information. Using impersonated domains enables cybercriminals to continue their attacks even if the previously compromised accounts have been secured and remediated.
Safeguards Against Conversation Hijacking with Comprehensive, AI-Based Detection
Guardian Digital EnGarde Cloud Email Security provides complete defense against conversation hijacking, account takeover (ATO), social engineering attacks, and other advanced targeted threats with a unique combination of AI-based technology and human intelligence. EnGarde’s adaptive, multi-layered protection leverages AI-powered behavioral analysis to gain key insights into your users’ behavior patterns and detect stealthy behavioral anomalies often present in conversation hijacking attacks. Human intelligence builds on this protection by providing a deeper understanding of the relationships you have with both customers and vendors to detect suspicious or threatening conversations.
Guardian Digital’s account takeover (ATO) protection involves the analysis of hundreds of thousands of email attributes, including legitimate sender behavior and sender-recipient relationships, to detect and stop the most evasive ATO and credential phishing attempts often involved in conversation hijacking scams. Guardian Digital anticipates the threats specific to your users and stops them using a collection of flexible filters that adapt to your environment.


Closes Critical Gaps in Built-In Microsoft 365 & Google Workspace Email Security
Built-in email protection in Microsoft 365 and Google Workspace is unable to defend your business against the sophisticated social engineering techniques and malicious URLs frequently used in conversation hijacking attacks. Native security mechanisms are also unable to identify behavioral and conversational anomalies often leveraged in these attacks to deceive victims into exposing sensitive credentials that can be used to compromise accounts. A successful conversation hijacking attack can lead to the compromise of sensitive information and severe, lasting reputation damage, making proactive supplementary email protection like Guardian Digital EnGarde Cloud Email Security provides critical in safeguarding your organization against conversation hijacking and other targeted, costly threats.
Improves Conversation Hijacking Defense and IT Efficiency with Managed Email Security
Expert ongoing system monitoring, maintenance and accessible support provide a remote extension of your IT team, improving security, maximizing productivity, simplifying deployment and easing the load on your IT department. Guardian Digital’s fully-managed EnGarde Cloud Email Security solution equips you with the knowledge and resources required to rapidly and reliably detect the most sophisticated threats to your users, your sensitive data, and the reputation of your brand. Our security experts are with you every step of the way, assisting with setup and providing the around-the-clock email vigilance required to identify and block all potential threats to the inbox.

See How Piedmont Natural Gas Secured Their Email and Cut Costs With Guardian Digital.





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