A Small Business Guide to Phishing Prevention
Published on July 15, 2025
It's a scary statistic: over 90% of successful data breaches start with a phishing email. Cybercriminals know that the easiest way into a company's network isn't through a complex hack, but by tricking an employee into clicking a malicious link or giving up their password. For small businesses, which are often seen as easier targets, a successful phishing attack can lead to data theft, financial loss, and reputational damage. The good news is that you can significantly reduce your risk by educating your team and implementing a few key technical safeguards.
How to Spot a Phishing Email
The first line of defense is your team. Train them to be skeptical of any unexpected email and to look for these common red flags:
- A Sense of Urgency: Emails that demand immediate action, like "Your account will be suspended in 24 hours," are designed to make you panic and act without thinking.
- Generic Greetings: Legitimate companies will usually address you by name. Be wary of emails that start with "Dear Customer" or "Valued User."
- Suspicious Links or Attachments: Hover your mouse over any link before you click it to see the actual destination URL. If it looks strange or doesn't match the sender, don't click. Never open attachments you weren't expecting.
- Poor Grammar and Spelling: While not always present, many phishing emails contain obvious grammatical errors or spelling mistakes.
- Unusual Sender Address: Check the sender's email address carefully. Scammers often create addresses that are very similar to legitimate ones, like "support@micosoft.com" instead of "support@microsoft.com".
Essential Steps for Prevention
Beyond training, there are technical controls that are crucial for protecting your business:
- Enable Multi-Factor Authentication (MFA): This is the single most effective thing you can do. MFA requires a second form of verification (like a code from your phone) in addition to your password. Even if a scammer steals a password, they won't be able to log in without the second factor.
- Use an Advanced Email Filtering Service: Services like Microsoft Defender for Office 365 or Abnormal Security can automatically detect and block the vast majority of phishing and spam emails before they ever reach your employees' inboxes.
- Conduct Regular Security Awareness Training: Don't make training a one-time event. Regular reminders and even simulated phishing tests can keep your team sharp and security top-of-mind.
By combining employee education with robust technical defenses, you can build a strong human firewall and protect your business from the ever-present threat of phishing attacks.