Email Security

Business Email Compromise (BEC) is a sophisticated scam where attackers impersonate executives, vendors, or trusted partners to trick employees into transferring funds or sharing sensitive data. BEC attacks caused $2.95 billion in verified business losses in 2025 according to the FBI's Internet Crime Complaint Center (IC3), and 2026 is already pacing higher. Our AI-powered email security detects BEC by analyzing sender behavior patterns, identifying display name spoofing, detecting lookalike domains, and flagging unusual requests for wire transfers or sensitive information. We also implement email authentication protocols (SPF, DKIM, DMARC) to prevent domain spoofing of your organization's email addresses.

SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication) are email authentication protocols that verify the sender's identity and prevent email spoofing. SPF specifies which mail servers are authorized to send email on behalf of your domain. DKIM adds a cryptographic signature to verify email integrity. DMARC ties SPF and DKIM together and tells receiving servers what to do with emails that fail authentication. Together, these protocols prevent attackers from sending emails that appear to come from your domain. Our team configures and manages these protocols as part of our email security service.

Our AI analyzes multiple signals in every incoming email including natural language patterns, sender reputation, header anomalies, URL destinations, attachment behavior, and contextual signals like urgency language or unusual requests. Machine learning models trained on millions of phishing samples detect subtle indicators that traditional signature-based filters miss, including zero-day phishing campaigns and highly targeted spear-phishing attacks. The system continuously learns from new threats, adapting its detection capabilities in real-time. Suspicious URLs are rewritten for time-of-click analysis, and attachments are detonated in sandboxed environments before delivery.

Emails flagged as suspicious are quarantined in a secure holding area where they cannot harm your systems. Users receive a daily digest notification showing quarantined messages with the reason for quarantine. Administrators can review, release, or permanently delete quarantined emails through the management dashboard. Legitimate emails that were incorrectly flagged (false positives) can be released with one click and the AI system learns from these corrections to improve future accuracy. Our false positive rate is under 0.01%, meaning virtually no legitimate business emails are blocked.

Yes — and that is the painful new reality of 2026. MFA stops password-only attacks, but a class of phishing called device code phishing bypasses it entirely by tricking a user into approving the attacker's login session on the user's own already-trusted device. The campaign we documented in Device Code Phishing Hits Microsoft 365 — EvilTokens Bypass MFA on 340+ Tenants hit more than 340 organizations using exactly this technique. Adversary-in-the-middle (AiTM) phishing kits like EvilProxy similarly steal the session cookie issued after a successful MFA prompt, giving the attacker the same access the user just authorized. Our email security blocks these campaigns before delivery by detecting the device-code initiation URLs and AiTM proxy domains they rely on, and we pair this with conditional access policies that flag impossible-travel sign-ins, unfamiliar devices, and session-token anomalies. MFA is necessary but no longer sufficient — email-layer detection plus identity-layer telemetry is what closes the gap.

Yes — through infostealer malware. An infostealer is a small program that quietly copies saved passwords, browser-stored logins, and active session cookies straight off an infected computer, including the tokens that keep your email signed in. Once those session cookies are stolen, an attacker can open your mailbox without a password and without triggering multi-factor authentication (MFA), because the session is already authenticated. In May 2026 the FortiClient EMS flaw (CVE-2026-35616) was weaponized to push the EKZ infostealer across managed fleets, and the credentials those campaigns harvest routinely resurface in business email compromise (BEC) and account-takeover attacks weeks later. We defend on two fronts: our email layer blocks the phishing and malicious-attachment campaigns that deliver infostealers in the first place, and our dark web monitoring watches for your harvested credentials so a stolen login can be rotated before it is ever used.

ClickFix is a fast-growing 2026 social-engineering technique where a phishing email links to a web page — often hosted on a legitimate website the attacker has quietly hijacked — that shows a fake error or "verify you are human" prompt and instructs the visitor to copy and paste a command into their own computer to "fix" it. The pasted command silently installs malware, sidestepping every attachment and download filter because the victim runs it by hand. In May 2026 attackers exploited a Ghost CMS SQL injection flaw (CVE-2026-26980) to turn Harvard, Oxford, and roughly 700 other trusted sites into ClickFix launchpads. Because the lure rides on domains your staff already trust, the inbound link in the delivery email is the first and best place to break the chain. Our email security inspects and rewrites inbound URLs for time-of-click analysis, flags newly weaponized pages even on otherwise-reputable domains, and pairs this with phishing-simulation training so employees learn to recognize the "paste this to continue" trap before they act on it.

Quishing is phishing that hides the malicious link inside a QR code image instead of clickable text. Traditional email filters scan the words and URLs in a message, but a QR code is just a picture to them — so the malicious destination sails through, and the victim scans it with a personal phone that sits outside corporate security controls. Attackers favor it for invoice fraud, fake multi-factor authentication (MFA) re-enrollment prompts, and shipping or HR notices. Our email security decodes QR codes inside inbound messages and attachments, resolves the embedded URL, and runs it through the same time-of-click and reputation analysis as any other link — and our phishing-simulation training teaches staff to treat an unexpected "scan to continue" prompt with the same suspicion as a "paste this to continue" one.

Yes — and it is one of the fastest-growing gaps we see. Vishing (voice phishing) is a phone call instead of an email, usually from someone claiming to be your IT help desk, asking an employee to approve a login prompt, read back a code, or enroll a new sign-in method. No message ever reaches your inbox, so no email filter can inspect it. In July 2026 we documented the "Pink Crew" campaign hijacking Microsoft 365 accounts with fake Entra passkey enrollment calls — the caller walks the victim through registering the attacker's passkey on the victim's own account, which hands over durable access that survives a password reset. The risk compounds when the help desk itself is compromised: the BeyondTrust Remote Support authentication bypass disclosed the same month let attackers walk past login on the exact console IT teams use to reach employee machines. Email security is a necessary layer but it cannot see a phone call — closing this gap takes identity-layer controls (help-desk verification procedures, restrictions on who can enroll authentication methods, alerts on new credential registration) plus our 24/7 managed SOC watching for the sign-in anomalies a successful vishing call produces. Our guide to fake IT support calls walks owners and managers through the verification steps that stop these calls cold.