
Implementing email security controls is crucial to protect your organization from cyber threats. According to a study, 91% of cyber attacks start with a phishing email.
To maximize protection, it's essential to use multi-factor authentication, which adds an extra layer of security to the login process. This can include a one-time password sent to a user's phone or a biometric scan.
Email encryption is another vital control that can prevent hackers from intercepting sensitive information. This can be achieved through the use of Transport Layer Security (TLS) or Secure Sockets Layer (SSL) certificates.
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What Are Email Security Controls?
Email security controls are a strategic set of measures designed to protect email-based communications, preserving confidentiality, integrity, and availability of email messages.
Email security solutions are designed to prevent unauthorized access resulting in data breaches, detect and block malicious content, and ensure the privacy of sensitive information being transmitted.
These controls are critical for all types of organizations and professionals, as email is often exploited to spread malware and viruses, steal sensitive data, deploy ransomware and phishing attacks, and manipulate users into divulging confidential information.
Email security controls are designed to protect against the ever-evolving spectrum of email-borne attack vectors, including human error.
By implementing email security controls, organizations can safeguard against data breaches, malicious content, and other email-borne threats, ensuring the privacy and security of sensitive information being transmitted.
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Types of Email Threats
Email threats are a serious concern, and it's essential to understand the types of attacks that can compromise your email security. Phishing attacks are a common method used by attackers to trick users into entering their login credentials on fake websites.
Phishing attacks can be launched through various means, including spear phishing, which targets specific individuals or organizations. Credential stuffing is another type of attack that uses previously leaked username and password combinations to attempt access to email accounts.
Malware-based attacks are also a significant threat, with malicious software used to steal stored credentials from browsers or password managers. Session hijacking exploits vulnerabilities in web applications or network protocols to steal active session tokens, giving attackers access to email accounts without using a password.
Malicious emails can cause significant damage, not just to one's device but to an entire network and its data. These emails can infect devices with malware, steal data, and even cause computers to download more malware.
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Here are some common types of email threats:
It's essential to be cautious when receiving emails from unknown senders or ones that seem suspicious. Avoid clicking links or downloading attachments from these emails, and delete them immediately.
Related reading: Moving Personal Emails and Stored Files Linked to Email Accounts
Benefits of Email Security Controls
Email security controls are a must-have for any organization, and for good reason. They protect against phishing and spoofing attacks, which can lead to devastating breaches and the risk of malware or other harmful computer viruses.
Email security controls can prevent data breaches by encrypting emails, protecting confidential information such as credit card numbers, bank accounts, employee PII, and intellectual property. This is crucial for businesses that handle sensitive customer data.
Email encryption ensures that only the intended recipients can access the email content, increasing confidentiality. It's also essential for regulatory compliance, as organizations must protect personal data under GDPR and HIPAA.
Here are some key benefits of email security controls:
- Protects against phishing and spoofing attacks
- Prevents data breaches
- Improves confidentiality
- Identifies malicious and spam emails
- Enhances detection and user training
- Avoids business risks and remains compliant
- Safeguards sensitive information
- Provides real-time protection
- Avoids compromised accounts and identity theft
Benefits
Email security controls are a must-have for any organization, and for good reason. They can protect against phishing and spoofing attacks, which can lead to devastating breaches and the risk of malware or other harmful computer viruses.
Protecting against phishing and spoofing attacks is just the tip of the iceberg. Email security controls can also prevent data breaches, which can be costly and damaging to an organization's reputation.
Preventing data breaches is crucial, as it can protect confidential information such as credit card numbers, bank accounts, employee PII, and intellectual property. This is especially important for organizations in regulated industries like financial services.
In fact, the GDPR regulation requires companies to take accountability for the data they manage and protect personal information appropriately. Sending sensitive information by unsecured email opens organizations to outbound risks, making it a compliance nightmare.
Email security controls can also improve confidentiality by ensuring that only the intended recipients can access the email content. This is achieved through robust email encryption, which is a must-have for any organization that handles sensitive information.
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In addition to preventing data breaches and improving confidentiality, email security controls can also identify malicious and spam emails that might breach the mail system's spam filter. This can make accounts vulnerable to engaging with such emails.
Here are some key benefits of email security controls:
- Protects against phishing and spoofing attacks
- Prevents data breaches
- Improves confidentiality
- Identifies malicious and spam emails
- Avoids business risks and remains compliant
- Safeguards sensitive information
- Provides real-time protection
- Avoids compromised accounts and identity theft
These benefits are just a few reasons why email security controls are essential for any organization. By implementing robust email security controls, organizations can protect themselves from a range of threats and ensure the confidentiality and integrity of their data.
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Why Businesses Need Controls
Businesses need controls in place to protect themselves from the ever-evolving threats of email-based attacks. According to Example 3, "Control Statement", improving protections and detections of threats from email and web vectors is crucial to prevent attackers from manipulating human behavior through direct engagement.
Email security is not just about protecting individual inboxes, but also about securing the entire organization from potential threats that could lead to significant data breaches or financial loss. Email security solutions can help prevent data breaches, improve confidentiality, and identify malicious and spam emails, as mentioned in Example 1.
For your interest: Email Security Threats
The importance of outbound email security cannot be overstated. Not only is it essential for regulatory compliance, but it's also critical to business continuity, as highlighted in Example 4. Implementing strong outbound email security measures, such as encryption, authentication, and data loss prevention, can reduce the risks of human error and cyber threats.
Here are some key benefits of email security controls:
In addition to these benefits, email security controls can also help safeguard sensitive information, prevent compromised accounts and identity theft, and provide real-time protection against zero-day exploits. As mentioned in Example 5, email security is crucial to protecting business and personal assets from threats, and it's essential to implement email security measures to stay ahead of evolving attack techniques.
Organizations are held to high standards of data protection, especially in regulated industries like financial services. As mentioned in Example 11, the primary regulation is GDPR, and companies must take accountability for the data they manage and protect personal information appropriately. Implementing email security controls can help organizations comply with these regulations and reduce the risk of data breaches and financial loss.
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Implementing Email Security Controls
Implementing email security controls is crucial to protect against various attacks that start with an email message, including malware, phishing emails, and Business Email Compromise (BEC). A comprehensive email security policy should be implemented to govern how users interact with sent and received emails.
To improve email security, organizations should implement multifactor authentication (MFA) across all email accounts and related services. This adds an extra layer of security by requiring users to provide two or more verification factors to access their accounts.
Email encryption is also essential to reduce the risks associated with regulatory violations, data loss, and corporate policy violations. Organizations should create policies regarding acceptable file types for attachments and implement scanning tools to detect malware before it enters the network.
Here are some key features to consider when implementing email security controls:
- Strong password requirements
- Multifactor authentication (MFA)
- Email encryption
- Email attachments
- Security awareness training
- Regular software updates
- Data retention
- Secure email gateway
By implementing these email security controls, organizations can protect against various attacks and ensure the confidentiality, integrity, and availability of their email communications.
Develop Policy
Developing a comprehensive email security policy is crucial to protect against cyber threats. It should define the types of information considered sensitive, outline acceptable use of email, and specify procedures for handling outbound data.
A robust security policy helps organizations protect against email-derived attacks, such as spam campaigns, malware, and phishing attacks. It's essential to have a policy in place to govern how users interact with sent and received emails.
According to Example 3, email security policies include a combination of strong password requirements, multifactor authentication, email encryption, and regular software updates. These policies should be tailored to support an organization's need to protect sensitive data while making it readily available to users, affiliates, and business partners.
To develop a comprehensive security policy, consider the following key elements:
- Define sensitive information and acceptable use of email
- Specify procedures for handling outbound data
- Include policies for strong password requirements, multifactor authentication, email encryption, and regular software updates
A well-crafted email security policy ensures that employees are aware of their responsibilities and provides guidelines for protecting sensitive data and preventing cyberattacks.
Multifactor Authentication (MFA)
Implementing Multifactor Authentication (MFA) is a crucial step in securing your email accounts and related services. MFA adds an extra layer of security by requiring users to provide two or more verification factors to access their accounts, reducing the risk of unauthorized access even if passwords are compromised.
MFA can combine something the user knows, such as a password, with something they have, like a smartphone app, or something they are, like biometric data. This approach is more secure than single-factor authentication, which is vulnerable to brute force attacks, guessing, or device compromise.
To implement MFA, you can use a combination of the following factors:
- Something you have: e.g. a one-time SMS code
- Something you know: e.g. an answer to a security question
- Something you are: e.g. biometrics like fingerprint or facial recognition
By adding MFA to your email security controls, you can ensure that any emails sent to the wrong recipient can't be opened and even if someone gains access to a recipient's inbox, they won't be able to read the message.
Integrate a Solution
Implementing a dedicated secure email solution is crucial to prevent outbound data leaks. Consider integrating an Outbound Email Security Solution to protect sensitive data against interception and human error.
The right solution should integrate seamlessly with your existing IT environment, including email platforms, CRM systems, and other security tools, to reduce friction and ensure a smoother implementation process.
A unified solution suite can simplify management and control costs by utilizing complementary solutions like Continuity, DMARC, Security Awareness Training, and Archiving within a single platform.
Seamless integration across tools is also essential, enhancing email intelligence with easy integrations to SIEM, XDR, and other platforms for rapid, bi-directional threat intelligence sharing.
Here are some key features to look for in an Outbound Email Security Solution:
- Email security utilizing AI, multi-faceted inspection services and sophisticated intelligence to stop BEC, spam and malware before they reach your users
- Targeted Threat Protection that scans every email, attachment and URL on every click to provide advanced threat protection from impersonation fraud, ransomware, whaling, phishing and spear-phishing attacks.
- Content Control and Data Leak Prevention that uses powerful scanning and quarantine features to stop inadvertent and malicious leaks at the gateway.
- Secure Messaging makes it easier for employees to share confidential and sensitive information without worrying about complex access keys or encryption methods.
By integrating a solution that offers these features, you can safeguard your business data and prevent cyber attacks that lead to data exfiltration.
Scalability
Scalability is crucial when implementing email security controls. Your security tool should be able to handle increased communication volume as your business grows.
Choose a solution that can adapt to evolving threats, just like you would adapt to changes in your infrastructure. This ensures your security tool stays effective over time.
A scalable solution will help you avoid downtime and data breaches that can occur when your security tool can't keep up with your business needs.
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Best Practices for Email Security Controls
Implementing email security controls is crucial to protect against email-derived attacks. Organizations have been increasing their level of email security, making it harder for attackers to access sensitive or confidential information.
Regular employee training is essential to build security awareness and identify email spoofing and phishing scams. Simulated exercises can help sharpen awareness, skills, and areas needing improvement.
To effectively safeguard an organization's collaboration, a unified platform with integrated protection across all communication channels is necessary. This approach ensures comprehensive threat detection and mitigation, eliminating gaps in security and streamlining operations.
Here are some key best practices for email security controls:
- Implement DMARC policy and verification to lower the chance of spoofed or modified emails from valid domains.
- Employ data loss prevention solutions to automatically detect and block emails containing sensitive or confidential information.
- Regularly update and audit security measures to identify and fix security gaps and adapt to a changing threat landscape.
Employee Training
Employee training is a crucial aspect of email security controls. Regular employee training should be built into the onboarding and ongoing dynamics of employees.
This training should help employees identify email spoofing and phishing scams, password creation best practices, and how to handle suspicious emails, particularly those containing attachments from unknown sources. Simulated exercises can help sharpen the awareness, skills, and areas needing improvement.
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A quarter of UK adults have accidentally shared personal data via email with the wrong recipient, highlighting the importance of proper training.
Employee awareness is critical to building a strong security culture and enhancing the success of your outbound email strategy. Training can include interactive workshops and simulated breaches.
The consequences of a data breach can be devastating, making it essential to educate employees on the importance of data security and email usage policies.
Update and Audit Measures
Regularly updating and auditing your email security measures is crucial to staying ahead of threats. This involves maintaining a rigorous schedule for updating and patching all email-related systems and software.
Organizations should promptly apply security patches to address known vulnerabilities and ensure all systems are running the latest, most secure versions. Automated patch management systems can help streamline this process and reduce the window of opportunity for attackers.
Regular audits and updates are necessary to identify and fix security gaps and adapt to a changing threat landscape. Audits should be completed frequently and thoroughly, covering technical aspects and organisation-wide adherence to policies.
Maintaining audit trails for digital communications is a regulatory requirement and a best practice. Audit logs track email interactions and security actions, including sender and recipient details, timestamps, content and attachments, access and interaction, metadata, and changes and version control.
Key audit log details include:
Outbound email security solutions often include compliance dashboards that provide visibility and insights into email usage and risks.
Implementing Controls Best Practices
Implementing controls best practices is crucial for effective email security. Organizations should improve protections and detections of threats from email and web vectors to prevent attackers from manipulating human behavior.
Regular audits and updates are necessary to identify and fix security gaps and adapt to a changing threat landscape. Audits should be completed frequently and thoroughly, covering technical aspects and organization-wide adherence to policies.
Implementing systems and policies to prevent users from emailing sensitive data to external parties is essential. Data loss prevention solutions can automatically detect and block emails containing sensitive or confidential information from being sent to third-party recipients.
To lower the chance of spoofed or modified emails from valid domains, implement DMARC policy and verification. This starts with implementing the Sender Policy Framework (SPF) and the DomainKeys Identified Mail (DKIM) standards.
Outbound email security is not a set-and-forget solution - regular updates are necessary to patch vulnerabilities, upgrade software, and revise policies based on new threats.
Technical Aspects of Email Security Controls
Email encryption protocols like Pretty Good Privacy (PGP) or S/MIME can enhance email security.
Email encryption transforms email messages and attachments into a coded format that cannot be read without a cryptographic key.
Using encryption methods like AES-256, emails are nearly impossible to decipher without authorized access.
The basic TLS encryption used by many providers often falls short when handling sensitive content.
Here are some key differences between TLS and end-to-end encryption:
- TLS encrypts the connection between mail servers during transit.
- Emails are only encrypted during transmission, not when stored in inboxes or servers.
- Both sender and recipient must use TLS-compatible services for it to work effectively.
- End-to-end encryption encrypts the email on the sender's device and keeps it encrypted until it reaches the intended recipient.
Encryption Protocols
Encryption protocols are a crucial aspect of email security, and there are several options to consider. Pretty Good Privacy (PGP) and S/MIME protocols are two popular choices that offer enhanced email security.
PGP and S/MIME protocols can be used to encrypt message content, protecting sensitive information from being read by anyone other than the intended recipients. This is especially important when communicating with external parties or sending emails containing sensitive data.
End-to-end email encryption is a more robust option that encrypts the email on the sender's device and keeps it encrypted until it reaches the intended recipient. This ensures that only authorized parties with decryption keys can access the content.
The strength of the encryption algorithm is essential for businesses sending sensitive information by email. AES-256 is a widely used and secure encryption algorithm that is fast and widely adopted in commercial and government contexts.
Here are some encryption protocols to consider:
- PGP (Pretty Good Privacy)
- S/MIME (Secure/Multipurpose Internet Mail Extensions)
- AES-256 (Advanced Encryption Standard with 256-bit key)
TLS (Transport Layer Security) is also an encryption protocol that encrypts the connection between mail servers during transit. However, it only encrypts emails during transmission, not when stored in inboxes or servers.
System Updates

Regularly updating and patching email-related systems and software is crucial to prevent outbound email threats.
Maintain a rigorous schedule for updating and patching all email-related systems and software, including email servers, client applications, and security solutions.
Promptly apply security patches to address known vulnerabilities and ensure all systems are running the latest, most secure versions.
Automated patch management systems can help streamline this process and reduce the window of opportunity for attackers.
Organizations can check many of these boxes by working with leading cybersecurity partners like Proofpoint and leveraging their comprehensive email security and protection solutions.
Regular audits and updates are necessary to identify and fix security gaps and adapt to a changing threat landscape.
Audits should be completed frequently and thoroughly, covering technical aspects and organisation-wide adherence to policies.
Updates may include patching vulnerabilities, upgrading software, and revising policies based on new threats.
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Solutions for Email Security Controls
To effectively implement email security controls, consider integrating an outbound email security solution to prevent data leaks and protect sensitive information. This should be a dedicated secure email solution that assists employees in preventing outbound data leaks.
Awareness alone is not enough; organisations must implement a dedicated secure email solution to assist employees in preventing outbound data leaks. The right solution protects sensitive data against interception and human error.
Outbound email security solutions employ a variety of techniques to protect data during its journey from sender to recipient. These include AI-driven behavioral analysis, real-time threat intelligence, and secure messaging for employees to share confidential and sensitive information.
Advanced email security products safeguard your business data by stopping the cyber attacks that lead to data exfiltration. Organizations should ensure their email security solutions offer the following features:
- Email security utilizing AI, multi-faceted inspection services and sophisticated intelligence to stop BEC, spam and malware before they reach your users
- Targeted Threat Protection that scans every email, attachment and URL on every click to provide advanced threat protection from impersonation fraud, ransomware, whaling, phishing and spear-phishing attacks.
- Content Control and Data Leak Prevention that uses powerful scanning and quarantine features to stop inadvertent and malicious leaks at the gateway.
- Secure Messaging makes it easier for employees to share confidential and sensitive information without worrying about complex access keys or encryption methods.
Choosing the Right Email Security Solution
Choosing the right email security solution is crucial for safeguarding your business data. This involves evaluating how well the solution aligns with your business needs, infrastructure, and risk profile.
Advanced threat detection capabilities, including AI and real-time scanning, are essential for identifying and blocking suspicious emails. Consider whether the solution includes these features in your evaluation.
Additional reading: Email Security for Small Business
Customizable controls are also important, as they allow you to tailor the solution to meet the needs of your organization and security team processes. This may include features such as email security utilizing AI and multi-faceted inspection services.
Scalability is another key consideration, as your organization grows and evolves. Ensure that the solution can accommodate this growth and adapt to changing needs.
Compliance requirements, such as HIPAA, GDPR, or other relevant standards, should also be taken into account. The solution should meet these requirements and provide seamless integration with existing email infrastructure and security tools.
Here are some key factors to consider when choosing an email security solution:
- Advanced threat detection capabilities
- Customizable controls
- Scalability
- Compliance requirements
- Seamless integration with existing infrastructure
Frequently Asked Questions
What are the three types of email security?
There are three main types of email security: digital, physical, and procedural. Digital security, in particular, focuses on encrypting emails to prevent unauthorized access.
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