25 May Beyond the inbox

As AI-driven phishing and business email compromise reach new levels of sophistication, traditional defences are no longer enough. Christo Coetzer, Director and CEO BlueVision, outlines the essential strategies organisations need to strengthen email security, reduce human risk, and stay ahead of evolving threats.

Email remains the frontline of cyber risk for most organisations, and in fast-growing, digitally connected markets that risk is only intensifying. Today’s email security strategies are no longer just about filtering spam—they are focused on combating increasingly sophisticated phishing, ransomware and business email compromise (BEC) attacks. To keep pace, organisations are turning to AI-driven threat detection, Multi-Factor Authentication (MFA) and zero-trust architectures, while reinforcing essential defences such as employee training, advanced threat protection (ATP), and encryption to reduce the ever-present risk of human error.

Gartner defines an email security solution as a platform designed to protect email infrastructure from both malicious and unwanted messages, including phishing, social engineering, malware and spam. But in practice, its role is far broader. Modern solutions also support email data protection, domain-based message authentication, reporting and conformance (DMARC), as well as investigation and remediation through dedicated management consoles. Increasingly, they extend beyond email itself, covering collaboration tools such as document sharing and instant messaging. According to Gartner, these platforms play a critical role in defending against account takeover, data loss and advanced BEC attacks, while also enabling capabilities such as encryption, domain authentication and user security awareness.

For cybersecurity teams, email security platforms provide vital visibility into threats targeting the organisation’s most widely used communication channel. They enable faster investigation, automated remediation and tighter control over both inbound and outbound email traffic. In many cases, they also integrate with wider security frameworks across network, identity, and endpoint environments, helping organisations build a more cohesive and resilient defence strategy.

Below I break down a set of best practices that aim to address all the components of email security and help your business to gain maximum protection.

Detection: Let’s kick off with the latest challenges facing any business trying to protect against bogus email detection. These include: the increasing sophistication of phishing attacks that use AI to mimic legitimate communication, the abuse of URL protection services that make malicious links appear safe, and the rise of QR code-based attacks. Additionally, the sheer volume of phishing emails can overwhelm traditional security measures, making it difficult to identify and respond to every threat in a timely manner.

New scanning technologies: These are quite effective in enhancing email security. They use AI and machine learning to detect and block phishing attempts in real time by analysing the content, context and metadata of emails. These technologies can quickly adapt to new threats, improving detection rates and reducing false positives. However, their effectiveness depends on regular updates and integration with other security measures.

AI-driven phishing: There are protection measures you can implement to counter this increasingly sophisticated attack mechanism. Businesses can protect against AI-driven phishing by implementing advanced threat detection technologies that leverage machine learning and AI. These technologies can analyse email patterns and behaviours to identify suspicious activities. Additionally, multi-factor authentication (MFA) should be employed to add an extra layer of security, making it more difficult for attackers to gain access even if credentials are compromised.

The role of human behaviour in the cyber threat landscape

This cannot be overestimated – it is a huge element with some global vendors citing 90% of breaches being attributable to human error or malice.

Employee training plays a crucial role in email security. There is no question that despite the ongoing development of technology advances, humans remain the weakest link in security. Continuous training helps employees to recognise phishing attempts, understand the importance of security protocols, and respond appropriately to suspicious emails. Regular simulated phishing exercises can reinforce training, ensuring that employees remain vigilant and can act as an additional line of defence.