How to Protect Your Business from Email Scams and Phishing
Fake invoices, impersonation, and phishing are among the most common ways businesses lose money online. Here is how to recognise the threats and protect your company.
Email is essential to running a business — and that makes it a favourite target for criminals. Scams that arrive by email cost businesses real money every day, often by tricking a busy person into one careless click or payment. The good news is that awareness and a few sensible habits prevent the vast majority of these attacks. Here is what to watch for and how to protect your business.
The most common email threats
Phishing
Phishing emails pretend to be from a trusted source — a bank, a supplier, a service you use — to trick you into revealing passwords or clicking a malicious link. They often create urgency: 'Your account will be closed', 'Verify immediately'. The goal is to make you act before you think.
Fake invoices
A scammer sends an invoice that looks legitimate, hoping you pay it without checking. Sometimes they impersonate a real supplier and quietly change the bank details, so your genuine payment goes to the criminal instead.
Business email compromise
Here an attacker impersonates a senior person in your business — often the owner or a manager — and emails staff requesting an urgent payment or sensitive information. Because it appears to come from the boss, employees may comply without questioning it.
Warning signs to watch for
- Unexpected urgency or pressure to act immediately.
- Requests to change payment or bank details by email.
- Slightly wrong email addresses or domains that look almost right.
- Poor spelling, odd phrasing, or generic greetings.
- Links that do not match the supposed sender, or unexpected attachments.
- Any request for passwords, codes, or sensitive information.
The single most effective habit: whenever an email asks you to make a payment or change bank details, verify it through a separate channel — call the person or supplier directly on a known number. A 30-second phone call prevents most costly mistakes.
How to protect your business
- 1Train your team to recognise the warning signs — most attacks succeed through people, not technology.
- 2Set a firm rule: verify all payment and bank-detail changes by phone, never by email alone.
- 3Use strong, unique passwords and enable two-factor authentication on email accounts.
- 4Configure SPF, DKIM, and DMARC so scammers cannot easily impersonate your domain.
- 5Keep software updated and be cautious with links and attachments.
- 6Use professional, secured business email rather than free accounts.
If you suspect an attack
If you receive a suspicious email, do not click anything or reply. Verify with the supposed sender through a trusted channel, and warn your team in case they received it too. If you think an account has been compromised, change passwords immediately and review recent activity. Acting quickly limits the damage.
The takeaway
Email scams rely on haste and trust, not clever technology. By training your team, verifying payment requests by phone, securing your accounts, and protecting your domain with proper authentication, you remove the openings criminals depend on. A little caution costs nothing and can save your business from a very expensive mistake.
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Written by the Saby Infotech team
Saby Infotech is a software development company based in Dar es Salaam, Tanzania. Over 10+ years we've delivered 50+ websites, hosting setups, and custom systems for 30+ businesses across 9+ industries — from safari operators and schools to NGOs and energy companies. These guides come from real project experience helping Tanzanian businesses get online and grow.
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