Cofense, Hornetsecurity, Mimecast and Trustifi

About Hornetsecurity

Hornetsecurity provides AI-powered Microsoft 365 security, backup and governance, risk and compliance services, including spam and malware protection, advanced threat protection, email encryption, archiving, DMARC management and data backup. Hornetsecurity Group was acquired by Proofpoint, Inc. in 2025, with the acquisition completed and announced on December 8, 2025. The company distributes its services through an international network of channel partners and managed service providers.^[1][3]

About Mimecast

Mimecast describes the problem it addresses as human risk. Its solutions page says Mimecast offers a unified and dynamic solution to rapidly identify and reduce risk caused by human actions and to empower users to make smarter security decisions. Mimecast says a unified platform with integrated protection across email, chat and file-sharing is essential to safeguard an organization's collaboration.^[2][5][15]

For email and collaboration threat protection, Mimecast says its solution blocks phishing, BEC, impersonation, malware and collaboration-based attacks using adaptive AI across email, Teams, Slack and more.^[2][11][16]

Mimecast Managed Threat Response is a managed service for emails that users report. Mimecast says each report is analyst-investigated, classified and remediated 24x7. Mimecast says the service works with the existing report button and that API outputs route to a SIEM, SOAR or case management platform.

For insider risk, Mimecast Incydr is the data protection product. Mimecast says Incydr brings email, endpoint, cloud, browser and agentic risk surfaces into one view, scored for risk and tied back to people. Mimecast says Incydr offers adaptive controls that range from in-the-moment education to allow-with-justification to targeted blocking. The Agent Risk Center, part of Mimecast Incydr, discovers the agents operating in an environment, classifies their AI activity against the customer's rules, and applies controls to reduce data exposure. Mimecast says Incydr offers data residency options and FedRAMP-authorized solutions, and that an ultra-lightweight agent supports Windows, Mac and Linux.^[2][9][18]

For security behavior management, Mimecast Engage delivers behavior-driven interventions powered by the Human Risk Command Center. Mimecast says Engage can deliver nudges via email, Slack or Teams, and that it offers 200+ training modules available in 27 languages. Mimecast says Engage connects with security tools such as CrowdStrike, Okta and Netskope.^[2][7]

For archiving, Mimecast Cloud Archive provides self-service tools to collect, discover, preserve and review collaboration data. Mimecast says Supervision supports review, escalation, export and reporting, Sync & Recover protects files, folders, contacts, tasks and notes, and Archive for MS Teams keeps encrypted copies of Teams data.^[9]

Mimecast says it protects and supports 42,000+ organizations globally and has done so since 2003. Its pages say it offers 300+ integrations.^{[2][9][10][11][17][18]}

About Trustifi

Trustifi sells a platform that uses AI, behavioral analysis and threat intelligence to detect phishing, business email compromise and malicious content across email, Teams, OneDrive and SharePoint. Trustifi says deployment takes minutes by API or Email Relay, or on any email server.^[5][6]

Trustifi describes a cloud-based email security solution that acts as an email filter. Trustifi says the filter uses AI to scan inbound emails and to identify and block email threats. Trustifi says advanced threat protection prevents attacks before they reach a user's mailbox. Text-based analysis catches impersonation, spoofing, spear phishing and Business Email Compromise (BEC), according to Trustifi. Trustifi describes full URL and file scanning, where URL protection blocks malicious URLs from any device. Trustifi says AI filters keep mailboxes clean of SPAM and gray emails to prevent phishing attacks. Trustifi says its scanning technology analyzes, detects and classifies phishing, malicious, SPAM and Gray emails.^[7][8]

Outbound Shield automatically scans and encrypts outgoing email messages according to administrators' policies, so emails that contain sensitive information are automatically secured. Trustifi says emails are sent securely and in line with Data Classification and Data Loss Prevention rules. Implementation takes minutes with automated integrations for Microsoft Office 365, Exchange on-premise and Google Workspace, according to Trustifi.^[2][3][9]

Trustifi's collaboration security is meant to stop sensitive data leaks and threats across Teams, OneDrive and SharePoint. Trustifi scans content, detects threats and enforces policy automatically. Trustifi lists 70+ built-in sensitivity types covering PII, PCI, PHI and credentials, with compliance mapping to HIPAA, GDPR and PCI-DSS. Trustifi says threat detection catches malware, phishing links, dangerous macros, scripts and encrypted archives across every collaboration surface.^[10]

Account Takeover Protection flags suspicious mailbox activity. Trustifi says suspicious messages are quarantined automatically according to the customer's policies. Trustifi describes account takeover protection as technology that monitors and reports suspicious company user email behavior, using AI engines to stop attacks and help secure and neutralize breached accounts. Trustifi says it employs machine learning to profile the typical company user and partners login behavior. Trustifi automatically notifies security account administrators when it detects compromised access to a user login account.^[2][5][11]

Trustifi offers an email security awareness training platform that it says helps reduce human error and prevent threats. Trustifi says email archiving is a requirement for all businesses operating in regulated sectors, including healthcare, government, finance and defense. Trustifi says archiving is required for any organization mandated to protect and retain emails for legal hold.^{[2][3][12][13]}