Cirrus provides email security solutions aimed at safeguarding email accounts

and communications from unauthorised access, data loss, or compromise.

Businesses can enhance their email security posture by establishing policies and using tools to protect against malicious threats such as malware, spam, and phishing attacks. Cybercriminals target email because it is an easy entry point to other accounts and devices—and it relies in large part on human error. All it takes is one misguided click to cause a security crisis for an entire organisation. 

What are the types of Email Security?

  • An envelope icon with a shield and checkmark indicating secure email or verified messaging.

    Encryption

    This ensures that only the intended recipient of an email will be able to read its contents. This is done by converting the contents of an email message into a coded language that can only be deciphered by someone with the encryption key. This way, if the email is intercepted while being sent, the information remains secure. 

  • A digital illustration of a blockchain or decentralized network, showing interconnected blocks in a hexagonal pattern.

    Digital Signatures

    This is a cryptographic method, it verifies the authenticity of a message and its sender. Using a digital signature will let the recipient know that the message was not tampered with in any way. 

  • An email envelope icon with a warning sign and exclamation mark inside a document, indicating an alert or issue with an email.

    Spam Filter

    Individuals and businesses receive thousands of spam messages every day. Most email software come equipped with spam filters that can automatically detect and filter out unwanted messages. These messages can contain malicious links, content, or phishing attacks.  

  • Illustration of a person teaching or presenting to three seated individuals around a table.

    Awareness Training

    Security awareness training helps prevent and mitigate human risk. Its designed to help users understand the role they play in combatting security breaches, effective security awareness training teaches proper cyber hygiene, security risks, and how to identify cyber-attacks  delivered via email and web browsing. 

Frequently Asked Questions about Email Security

  • Email security protects your business from threats such as phishing, malware, and data breaches.
    It is vital because email is a primary target for cyber attacks and a common entry point for attackers.

  • Phishing emails trick users into clicking links or sharing sensitive information by impersonating trusted sources.
    Look for signs such as urgent language, unusual sender addresses, and unexpected attachments.

  • Microsoft 365 includes built-in protection against spam, phishing, and malware.
    However, many businesses add extra layers such as advanced security tools and backups for greater protection.

  • Many ransomware attacks start with malicious emails containing harmful links or attachments.
    Effective email security can detect and block these threats before they reach users.

  • Use multi-factor authentication, strong filtering, and train staff to recognise cyber threats.
    Combine this with email authentication (SPF, DKIM, DMARC) and regular backups for full protection.