Email Security for Healthcare: Stopping Phishing and BEC Before They Reach Staff
NHSmail processes over 1.5 billion emails per year. Of those, a significant proportion are spam, phishing attempts, and malware delivery vehicles. Standard email filtering catches the obvious — mass spam campaigns with known malicious links. What it misses is targeted spear-phishing, business email compromise (BEC), and vendor email fraud — the sophisticated attacks that lead to ransomware outbreaks and six-figure frauds. Advanced email security uses AI and behavioural analysis to catch what signature-based filters cannot.
90% of cyberattacks start with email — and advanced persistent threats targeting healthcare use spear-phishing techniques that bypass standard NHS email filters.
Advanced Email Threats Targeting Healthcare
Beyond mass phishing campaigns, healthcare organisations face: spear-phishing emails specifically crafted using publicly available information about staff roles, clinical teams, and NHS systems; business email compromise (BEC) where attackers impersonate senior NHS executives or finance directors to authorise fraudulent payments; vendor email fraud where attackers intercept or spoof supplier invoices to redirect payments; and malware delivery through macros in Microsoft Office attachments disguised as patient referrals, test results, or NHS circulars. Each of these attacks is designed to evade standard email filters by avoiding known malicious indicators.
What Effective Healthcare Email Security Includes
A comprehensive email security solution for healthcare should include: AI-powered phishing detection that analyses sender behaviour, email content, and link patterns without relying on signature matching; impersonation protection that identifies emails spoofing NHS domains, senior staff, or trusted suppliers; malware sandboxing that detonates attachments in a safe environment before delivery; DMARC/DKIM/SPF enforcement to prevent domain spoofing; and user-reported phishing analysis that feeds back into the detection system. Coro's email security module, deployed by Kyanite Blue, provides all of these capabilities in a single platform with healthcare-specific configuration.
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