Business email compromise (BEC) caused $2.9 billion in reported losses in 2025 — more than any other cybercrime category reported to the FBI. Add phishing attacks targeting employees, invoice fraud, vendor impersonation, and payroll diversion, and the total business impact of scams far exceeds consumer losses. This guide covers the enterprise protection stack needed to defend against scam threats at the organizational level.
Looking for a solution your team can use today? IsThisAScam.to provides instant scam analysis that any employee can use — no training required. Contact us about enterprise API access.
The Business Scam Threat Landscape
Business Email Compromise (BEC)
BEC attacks impersonate executives, vendors, or business partners to redirect wire transfers, change payment details, or steal sensitive data. Average loss per incident: $1.2 million. These attacks often involve no malware — just social engineering via email.
Vendor Impersonation and Invoice Fraud
Scammers send fake invoices from look-alike domains or compromised vendor email accounts. The invoices match real vendor patterns but route payment to scammer-controlled accounts. Accounts payable departments process hundreds of invoices — catching the fraudulent ones requires systematic verification.
Payroll Diversion
HR receives an email appearing to be from an employee, requesting a change to their direct deposit information. The change routes the employee's next paycheck to a scammer's account.
Executive Whaling
Highly targeted phishing aimed at C-suite executives, board members, and senior management. These attacks are researched and personalized, referencing real business activities, travel schedules, and relationships.
Supply Chain Compromise
Attackers compromise a vendor's email system and use it to send legitimate-looking communications to their customers, redirecting payments or distributing malware.
Got a suspicious email?
Paste it here for an instant analysis.
Free · No signup required · Cmd+Enter to scan
Layer 1: Email Security Gateway
The first line of defense. Enterprise email gateways filter incoming email before it reaches employee inboxes:
Proofpoint
Market leader for enterprise email security. Advanced threat protection including URL defense, attachment sandboxing, and BEC detection. Uses AI to detect impersonation attempts based on communication patterns.
- Best for: Large enterprises with complex email environments
- Price: $3-8/user/month depending on tier
Microsoft Defender for Office 365
Native integration with Microsoft 365. Provides safe links, safe attachments, anti-phishing policies, and attack simulation training. Best choice for organizations already on Microsoft 365.
- Best for: Microsoft 365 environments
- Price: Included in Microsoft 365 E5 or as add-on from $2/user/month
Abnormal Security
API-based email security that deploys alongside existing gateways. Uses behavioral AI to detect BEC by learning normal communication patterns and flagging deviations. Catches socially-engineered emails that content-based filters miss.
- Best for: Organizations with BEC as a primary concern
- Price: Contact for enterprise pricing
Mimecast
Comprehensive email security, archiving, and continuity. Strong impersonation protection and URL rewriting.
- Best for: Mid-market organizations wanting an all-in-one platform
- Price: $3-6/user/month
Layer 2: Employee Training and Awareness
Technology catches most threats, but employees are the last line of defense — and the most common vulnerability. Effective training programs include:
Phishing Simulations
Regular simulated phishing emails test employee awareness. Platforms like KnowBe4, Proofpoint Security Awareness, and Cofense run realistic phishing simulations and provide immediate training when employees click.
Key metrics to track:
- Click rate (industry average: 15-30% on first simulation, target under 5%)
- Report rate (employees reporting suspicious emails to IT)
- Time-to-report (how quickly suspicious emails are reported)
IsThisAScam as an Employee Tool
Give employees access to IsThisAScam as a self-service verification tool. When an employee receives a suspicious email, they can paste it for instant analysis instead of forwarding it to IT (which creates delay) or making a judgment call on their own (which may be wrong). The 6-layer analysis provides an objective assessment regardless of the employee's security expertise.
Process-Based Defenses
Training alone is not sufficient. Implement process controls:
- Dual authorization for wire transfers: No single person can authorize a transfer above a threshold
- Verbal verification for payment changes: Call vendors on known numbers (not numbers in the email) to verify bank detail changes
- HR verification for payroll changes: In-person or video verification for direct deposit changes
- Established vendor verification procedures: Maintain a verified contact list for all vendors and require out-of-band confirmation for any payment changes
Layer 3: Technical Controls
Email Authentication (DMARC Enforcement)
Implement DMARC with p=reject policy for your organization's domain. This prevents scammers from sending emails that appear to come from your domain. Shockingly, only 33% of Fortune 500 companies had DMARC enforcement as of 2025.
Multi-Factor Authentication (MFA)
Require MFA for all employees, especially for email access, VPN, and financial systems. Use phishing-resistant MFA (hardware keys like YubiKey or passkeys) for high-value targets.
DNS-Level Filtering
Deploy DNS filtering (Cisco Umbrella, Cloudflare Gateway, Zscaler) to block connections to known malicious domains across the entire network.
Endpoint Detection and Response (EDR)
Deploy EDR solutions (CrowdStrike, SentinelOne, Microsoft Defender for Endpoint) to detect and respond to threats that bypass email filtering.
Layer 4: Incident Response
When a scam succeeds (and statistically, it eventually will), fast response limits damage:
- Wire transfer recall: Contact your bank within 24-72 hours for the best chance of recalling fraudulent transfers
- Account lockdown: If credentials were compromised, immediately reset passwords and revoke active sessions
- Forensic investigation: Determine the scope of compromise — was it a single email or a broader system breach?
- Law enforcement reporting: File with FBI IC3 (ic3.gov) for any business fraud
- Employee notification: If employee data was exposed, notify affected individuals
IsThisAScam Enterprise Solutions
IsThisAScam offers enterprise API access for organizations that want to integrate 6-layer scam detection into their existing security stack:
- API integration for email gateway supplementation
- Bulk URL and content scanning
- Employee-facing analysis portal
- Threat intelligence feeds
- Custom detection rules for industry-specific threats
Contact us at isthisascam.to for enterprise pricing and integration details.
For individual protection, see best email security tools and best phishing protection. For context on the threats businesses face, see 2026 scam statistics.
Received something suspicious? Check it now for free →