Smishing is a form of phishing that uses text messages and mobile messaging apps instead of email. The term combines “SMS” and “phishing.” In a smishing attack, cybercriminals send messages that: - Pretend to be from trusted organizations (banks, delivery services, government agencies, internal IT, etc.) - Try to get employees to click a link, share credentials, or download malware - Often create a sense of urgency (e.g., “Your account will be locked in 30 minutes unless you verify…”) Smishing is no longer limited to traditional SMS. Attackers increasingly use apps like WhatsApp, Facebook Messenger, and WeChat, which makes it easier and cheaper for them to reach more people. For companies, smishing matters because: - Attackers can trick employees into giving up corporate credentials and VPN logins - Compromised accounts can lead to data theft, wire fraud, or unauthorized access to internal systems - Remote and hybrid work models increase reliance on mobile devices, expanding the attack surface Even if your email defenses are strong, smishing bypasses many of those controls by targeting employees directly on their phones. That’s why it needs to be part of your broader security awareness and mobile security strategy.

Smishing campaigns tend to reuse a few familiar themes that play on urgency, money, and trust. Common examples your employees are likely to see include: 1. **Fake security or 2FA alerts** - Example: “Unusual login detected. Confirm your identity now: [link]” - Often framed as part of a two-factor authentication (2FA) process or a login verification step - Goal: Drive the user to a fake login page to capture credentials or deliver malware 2. **Banking and financial account issues** - Example: “Your card has been blocked due to suspicious activity. Verify here: [link]” - May mention overdrafts, blocked cards, or suspicious transactions - Goal: Get the user to enter banking or personal information under the pretext of “fixing” the issue 3. **Prize, lottery, or gift card offers** - Example: “You’ve won a gift card from [well-known retailer]. Claim now: [link]” - Sometimes tied to real promotions from large retailers to appear more believable - Goal: Capture personal data or install malware via the link 4. **Survey and reward scams** - Example: “Complete this quick survey and get a discount or prize: [link]” - Uses incentives to overcome reluctance to fill out surveys - Goal: Collect personal or company-related information, or redirect to malicious sites 5. **Government or Covid-related benefits** - Example: “You are eligible for new relief payments. Apply here: [link]” - Often reference unemployment benefits, relief programs, or low-interest loans - Goal: Harvest identity data and financial details Across these themes, there are consistent red flags you can train employees to notice: - Unsolicited messages that appear “out of the blue” - Strong urgency or deadlines (“respond in 10 minutes,” “last chance,” etc.) - Requests to click a link or share sensitive information - Messages that don’t match any action the employee actually initiated (e.g., they weren’t trying to log in or verify anything) Helping employees recognize these patterns is one of the most effective ways to reduce smishing risk.

You can reduce smishing risk by combining policy, technology, and employee education. Key actions include: 1. **Define a clear BYOD and mobile policy** - If employees use personal phones for work, document how they should handle suspicious messages. - Clarify what your company will and will not send via SMS or messaging apps (e.g., “We never ask for passwords or payment details by text”). 2. **Apply access control and least privilege** - Limit each user’s access to only the systems and data they need. - If someone falls for a smishing attempt, the attacker’s access is naturally constrained. 3. **Run targeted security awareness training** - Include smishing examples in your regular security training, not just email phishing. - Emphasize: - Treat urgent or unexpected texts with caution - Avoid tapping links in unsolicited messages - Never share passwords, 2FA codes, or financial data over text - Use periodic quizzes or simulations to gauge awareness. 4. **Set simple rules for employees** - **Pause on urgency:** Limited-time offers, “account locked,” or “immediate action required” messages should trigger extra scrutiny. - **Don’t reply to unknown senders:** Even “Reply STOP to unsubscribe” can confirm that a number is active. - **Avoid clicking links in texts:** When in doubt, go directly to the official website or app instead of using the link. - **Report suspicious messages:** Encourage employees to forward suspicious texts to your security team and, where possible, to the mobile carrier. 5. **Use technical controls where possible** - Work with mobile carriers to enable message filtering and blocking of known suspicious senders. - Ask carriers to block SMS sent from Internet-based relay services if that aligns with your risk posture. 6. **Strengthen authentication** - Enable two-factor authentication (2FA) or multi-factor authentication (MFA) for corporate accounts. - Even if a password is compromised, an additional factor makes unauthorized access harder. 7. **Keep devices and apps updated** - Encourage or enforce regular updates for mobile operating systems and browsers. - Updates often include security improvements that help detect or block malicious links. 8. **Make your own SMS communications trustworthy** - Avoid including web links in your outbound SMS where possible; if you must, don’t use URL shorteners. - Use a consistent Sender ID instead of a random phone number, and avoid special characters. - Keep the number of SMS providers you use low to reduce complexity and potential abuse. - Periodically verify that carriers are not altering your sender information or message content. 9. **Encourage direct verification** - Train employees: if a text claims to be from a bank, vendor, or internal team, they should verify using a known phone number or official app, not the contact details in the message. By combining these measures, you can reshape how your organization thinks about mobile security, reduce the likelihood of successful smishing attacks, and limit the impact if one does occur.