How to Identify and Prevent Phishing Attacks Targeting Your Business

Phishing remains the number one attack vector for cybercriminals targeting South African businesses. Despite advances in security technology, these deceptive emails, messages, and websites continue to trick employees into revealing sensitive information, transferring funds, or installing malware. In fact, over 90% of successful cyberattacks begin with a phishing email — making awareness your most critical line of defence.

What Is Phishing and Why Is It So Effective?

Phishing is a form of social engineering where attackers impersonate trusted entities — banks, service providers, colleagues, or even your CEO — to manipulate victims into taking harmful actions. What makes phishing devastatingly effective is that it exploits human psychology rather than technical vulnerabilities. Fear, urgency, curiosity, and trust are the attacker’s primary tools.

South African businesses face unique phishing challenges. Attackers frequently impersonate SARS during tax season, spoof banking notifications from major SA banks like FNB, Standard Bank, and Nedbank, and create fake POPIA compliance notices to create urgency. Business email compromise (BEC) attacks targeting financial departments have cost South African companies millions in fraudulent transfers.

Common Phishing Techniques Targeting SA Businesses

Email Phishing

The most common form, where attackers send emails that appear to come from legitimate sources. These often contain urgent requests to verify account details, reset passwords, or review attached invoices. Modern phishing emails are increasingly sophisticated — gone are the days of obvious spelling errors and generic greetings. Today’s phishing emails can be virtually indistinguishable from the real thing.

Spear Phishing

Unlike broad phishing campaigns, spear phishing targets specific individuals within your organisation. Attackers research their targets using LinkedIn, company websites, and social media to craft highly personalised messages. A finance manager might receive what appears to be an invoice from a known supplier, or a CEO might get a message seemingly from their board chairperson.

Smishing and Vishing

SMS phishing (smishing) and voice phishing (vishing) are growing rapidly in South Africa. Fake SMS messages claiming to be from banks or delivery services, and phone calls from supposed “IT support” or “bank fraud departments” are increasingly common. These attacks often create a sense of urgency — “Your account has been compromised, act now” — to bypass critical thinking.

Business Email Compromise (BEC)

Perhaps the most financially damaging form of phishing, BEC attacks involve compromising or spoofing executive email accounts to authorise fraudulent payments. A typical scenario: an attacker compromises a supplier’s email account, monitors correspondence, then sends a legitimate-looking email with updated banking details just before a large payment is due. By the time the fraud is discovered, the money is gone.

Red Flags: How to Spot a Phishing Attempt

Train your team to watch for these warning signs:

Urgency and pressure. Legitimate organisations rarely demand immediate action. Messages saying “Your account will be suspended in 24 hours” or “Immediate payment required” are classic phishing tactics designed to prevent you from thinking critically.

Suspicious sender addresses. Always check the actual email address, not just the display name. An email from “Standard Bank” sent from standardbank.alerts@gmail.com is not legitimate. Hover over links before clicking to see where they actually lead.

Unexpected attachments. Be especially cautious with unexpected invoices, delivery notifications, or documents — particularly .zip, .exe, or macro-enabled Office files. When in doubt, verify with the sender through a separate communication channel.

Requests for sensitive information. No legitimate organisation will ask you to provide passwords, PINs, or full account numbers via email. If you receive such a request, contact the organisation directly using a known phone number — not one provided in the suspicious email.

Too good to be true. Prize notifications, unexpected refunds, and incredible offers are common lures. If you didn’t enter a competition, you haven’t won one.

Building a Phishing-Resistant Organisation

Protecting your business from phishing requires a combination of people, process, and technology:

Security awareness training. Regular, engaging training is essential — not just an annual compliance exercise. Use simulated phishing campaigns to test and reinforce learning. Celebrate employees who report suspicious emails rather than punishing those who fall for simulations.

Email security controls. Implement SPF, DKIM, and DMARC records for your domain to prevent attackers from spoofing your email addresses. Deploy an email security gateway that filters malicious content before it reaches inboxes. Enable external email banners so employees can easily identify emails from outside the organisation.

Multi-factor authentication (MFA). Even if credentials are compromised through phishing, MFA provides a crucial second layer of defence. Enforce MFA across all business applications, particularly email, cloud services, and financial systems.

Payment verification procedures. Establish strict verification processes for any payment or banking detail changes. Require verbal confirmation via a known phone number for all payment modifications — never rely on email alone for financial instructions.

Incident reporting culture. Make it easy for employees to report suspicious communications without fear of reprimand. The faster a phishing attempt is reported, the faster your security team can respond and protect others in the organisation.

What to Do If You’ve Been Phished

If you suspect you or an employee has fallen victim to a phishing attack, act immediately: change all potentially compromised passwords, enable MFA if not already active, notify your IT security team or managed security provider, and monitor accounts for suspicious activity. If financial fraud has occurred, contact your bank immediately and report the incident to the South African Police Service (SAPS).

At Continuum Security, we help South African businesses build comprehensive phishing defences — from security awareness programmes and simulated phishing campaigns to email security configuration and incident response planning. Book a free assessment to evaluate your organisation’s phishing resilience.