Securing Business Emails Against Email Viruses

Email viruses, which account for the majority of computer viruses, can compromise sensitive data, harm hardware and waste critical resources. User-downloaded viruses are responsible for 2,000,000 to 5,000,000 attacks per day.

What Is an Email viruses?

Email viruses are commonly linked to phishing attacks, and many rely on user naivety to infect devices and spread. Others are hidden in stealthy social engineering attacks and employ advanced techniques like masquerading as a seemingly harmless file by changing their signature, making these viruses highly difficult to detect and avoid.

Types of Securing Business Emails Against Email Viruses

There are many different types of email viruses, and new zero-day viruses are rapidly emerging.
A few of the most dangerous types of email viruses include:

Boot Sector Viruses

These viruses spread on the master boot record, making them very difficult to remove and frequently resulting in a full system reformat.

Direct Action Viruses

When a user clicks on a file infected with a direct action virus, the attached virus is activated and continues to spread.

Resident Viruses

This type of virus infects files, installs itself on a PC and can persist even after the primary source of the virus is removed.

Multipart Viruses

These viruses can infect the boot sector as well as files on a computer and can spread extremely rapidly and be very difficult to remove.


When installed on a device, this type of spyware enables a malicious actor to track and log the keys that the user strikes on his or her keyboard, capturing sensitive information that is typed without the user's knowledge.

Polymorphic viruses

This type of virus changes its signature when it reproduces, masquerading as a different and seemingly harmless file.

The Guardian Digital Advantage

Protect your users, your key business assets and your reputation with a multi-layered email protection system
that keeps viruses out of the inbox.

Safeguards the Inbox against Zero-Day & Polymorphic Viruses

Regardless of the techniques that it utilizes to detect viruses and other threats, antivirus software has its limitations. Antivirus programs are often ineffective in detecting zero-day and polymorphic viruses, and virus designers test new viruses that they create on established antivirus applications to ensure that they are not detected before releasing these viruses into the wild.

Guardian Digital keeps even the most sophisticated and stealthy email viruses out of the inbox with a combination of multi-layered detection engines powered by heuristics and advanced email filtering technologies capable of detecting and blocking all types of email viruses.


Delivers Complete Virus Protection by Closing Critical Gaps in Native Microsoft 365 & Google Workspace Email Security

Native Microsoft 365 and Google Workspace email protection is limited in its ability to detect zero-day and polymorphic viruses, and is thus ineffective alone in preventing disruptive, costly infections.

Guardian Digital EnGarde Cloud Email Security closes the gaps in native Microsoft 365 and Google Workspace email protection with critical additional layers of proactive email defenses that prevent dangerous email viruses from infiltrating your employees’ inboxes.

Extends IT Resources to Offer Superior Virus Protection

Many businesses - especially SMBs - experience a shortage of cybersecurity resources and expertise, putting them at an increased likelihood of suffering an email virus infection.

Guardian Digital’s expert ongoing system monitoring, maintenance and accessible support provide a remote extension of your IT team, improving your business’s email security posture and maximizing your team’s productivity with reliable, cost-efficient virus protection.


Prevent Costly, Disruptive Email Virus Infections with Guardian Digital EnGarde Cloud Email Security.

Phishing Is Evolving.

Are Your Current Email Defenses
Falling Behind?

Modern phishing scams have introduced a new level of risk for businesses. Attackers are targeting Microsoft 365 and Google Workspace users in increasingly sophisticated campaigns designed to evade built-in security defenses.

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Email Risk in Microsoft 365

is Greater than Ever

What's your strategy for preventing loss of email communication and theft in Microsoft 365? Guardian Digital secures Microsoft 365 against the cost of credential phishing and account takeovers.

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Learn how Piedmont Natural Gas improved their email infrastructure in a secure and cost-effective manner with Guardian Digital to protect against phishing and malware attacks.