You can have enterprise-grade firewalls, fully patched systems, and 24/7 monitoring — and still get breached because someone in accounts payable clicked a link in an email.
Phishing and social engineering are responsible for the majority of successful cyberattacks against businesses. Not because IT teams aren’t doing their jobs, but because these attacks target something technology can’t fully patch: human judgment under pressure.
For manufacturers, the stakes are especially high. A compromised email account isn’t just a data problem — it’s a potential pathway to your ERP, your vendor payment systems, and ultimately your plant floor.
What’s the Difference Between Phishing and Social Engineering?
These terms are often used interchangeably, but they’re not quite the same:
Phishing is a specific technique — sending fraudulent messages (usually email, sometimes text) designed to trick the recipient into clicking a malicious link, downloading malware, or handing over credentials.
Social engineering is the broader category. It’s the art of manipulating people into taking actions or revealing information they shouldn’t. Phishing is one form of social engineering, but so is a phone call from someone pretending to be your IT provider, or a visitor who tailgates into a secure area by carrying a heavy box.
Both rely on the same fundamental principle: it’s easier to trick a person than to break through a firewall.
How These Attacks Play Out in Manufacturing
The attacks that hit manufacturers aren’t always the obviously suspicious emails with broken English and Nigerian princes. Modern phishing is sophisticated, targeted, and often nearly indistinguishable from legitimate communication.
Business Email Compromise (BEC) is one of the most damaging. An attacker compromises or spoofs an executive’s email account and sends a message to finance or accounting requesting an urgent wire transfer or a change to a vendor’s payment details. The FBI consistently ranks BEC as one of the costliest cyber crimes — manufacturers are frequent targets because they often have large vendor payment flows and lean finance teams.
Credential harvesting is another common pattern. An employee receives what looks like a Microsoft 365 login page asking them to re-authenticate. They enter their username and password. The attacker now has valid credentials to your email system, and from there, they can explore everything connected to it.
Vendor impersonation is particularly effective in manufacturing supply chains. Attackers research your vendor relationships — often from LinkedIn or your own website — and send emails impersonating a supplier about an invoice, a delivery issue, or a contract renewal. The email contains a link or attachment that delivers malware or captures credentials.
Vishing (voice phishing) happens over the phone. Someone calls your IT help desk claiming to be an employee locked out of their account. If the help desk doesn’t have strict identity verification procedures, they may reset credentials for an attacker.
Why Manufacturers Are Targeted
Manufacturing companies get targeted for a few specific reasons beyond their size:
Lean IT staffing. Many mid-sized manufacturers run with a small IT team or a single IT person. Security awareness training often gets deprioritized behind keeping systems running.
High-value transactions. Manufacturers move significant money — equipment purchases, raw material contracts, freight payments. BEC attacks follow the money.
Complex vendor relationships. Dozens of supplier and customer relationships mean lots of expected email communication, which makes spoofed vendor emails harder to spot.
OT access potential. Once an attacker has a foothold in your IT environment, they may probe for paths to your operational technology. A compromised engineering workstation that also connects to SCADA systems is a high-value target.
What a Strong Defense Looks Like
No single measure eliminates phishing risk, but layering the right controls dramatically reduces it.
Security Awareness Training
Your employees are both your biggest vulnerability and your best potential defense. Regular training — not a once-a-year compliance checkbox, but ongoing education — changes how people respond to suspicious messages.
Effective training includes:
- Teaching employees to recognize common tactics (urgency, authority, fear)
- Simulated phishing tests that show employees what real attempts look like
- Clear procedures for reporting suspicious emails without fear of blame
- Specific guidance for high-risk roles (finance, HR, anyone with system admin access)
The goal isn’t to embarrass people who get caught in a simulated phish. It’s to make the experience of nearly falling for one a learning moment rather than a real incident.
Multi-Factor Authentication
MFA is the single most effective technical control against credential theft. Even if an attacker harvests a valid username and password through phishing, they can’t log in without the second factor. We covered MFA in depth in a previous post — if you haven’t implemented it across your critical systems, that’s the place to start.
Email Security Controls
Modern email security goes beyond spam filters:
- DMARC, DKIM, and SPF are email authentication standards that make it significantly harder to spoof your domain or your vendors’ domains
- Sandboxing detonates suspicious attachments in an isolated environment before they reach the recipient
- Link rewriting and scanning checks URLs at click-time, catching links that were clean at delivery but later redirected to malicious sites
Clear Wire Transfer Procedures
For finance teams specifically: establish a policy that any change to vendor payment details or any out-of-band wire transfer request must be verified by a phone call to a known number — not a number provided in the email. This one procedural control stops most BEC attacks cold.
Incident Reporting Culture
Employees who click something suspicious and don’t report it because they’re embarrassed allow an attacker hours or days of uncontested access. Build a culture where reporting a potential mistake is encouraged and handled without blame. The faster a potential phish is reported, the faster your IT team can respond.
The Realistic Goal
You won’t stop every phishing attempt from reaching an inbox. You won’t prevent every employee from ever clicking something they shouldn’t. The goal is to make your organization resilient enough that when someone does take the bait, the damage is contained and detected quickly — not a pathway to a full network compromise.
That means layering technical controls, training your people, and having the monitoring in place to catch suspicious activity early.
Want to know how your current email security and security awareness program stack up? Our free IT assessment covers both. Get in touch.