SureSMS guide
Spoofing, phishing, smishing and AIT: What does it mean for SMS security?
Digital fraud methods are becoming more sophisticated. Here we look at spoofing, phishing, smishing and artificially inflated traffic (AIT) - and what businesses can do to protect customers, brand and SMS traffic.
Main points
- Spoofing, phishing and smishing are all about tricking the recipient into trusting a fake or manipulated sender.
- Smishing is particularly serious because SMS is a direct channel where the recipient often responds quickly.
- AIT - artificially inflated traffic - is a growing problem where fake traffic can create unnecessary SMS costs and abuse of systems.
SMS is a powerful channel because it's direct, fast and widely accessible. But that's exactly why SMS is also interesting for scammers. When a message looks like it comes from a bank, freight company, government agency or well-known company, the recipient is more likely to react without thinking.
That's why it's important to understand the most common forms of digital fraud: spoofing, phishing and smishing. And for companies sending SMS via gateway or API, it's also important to understand AIT - artificially inflated traffic.
What is spoofing?
Spoofing is when a sender or identity is masked so that the communication appears to come from a credible source. This can happen via email, websites, phone calls, social media and SMS.
The aim is to make the recipient trust the message. If the sender looks like a bank, a well-known company or a government agency, the recipient is more likely to click, reply or share information.
Spoofing isn't necessarily the scam itself - it's the disguise that makes the scam seem believable.
What is phishing?
Phishing is typically fraudulent emails that attempt to get the recipient to provide sensitive information. This could be login details, credit card data, MitID-related information or access to internal systems.
Phishing messages often use urgency or fear: “Your account will be closed”, “There is suspicious activity”, or “You need to verify your details now”. The link often leads to a fake page that looks like the real one.
The typical characteristics are:
- Unexpected messages demanding urgent action
- links to fake login or payment sites
- malware attachments
- Sender names that look like real companies
- language, design or domains that almost - but not quite - work right
What is smishing?
Smishing is phishing via SMS. This means that the scammer uses SMS to get the recipient to click on a link, call a fake number or provide personal information.
Smishing can be particularly effective because SMS feels more personal than email. Many people respond quickly to messages about packages, payments, accounts, booking, banking or government services.
Examples of smishing can be:
- “Your package cannot be delivered - pay fee here”
- “Your account is blocked - please confirm login”
- “There is suspicious activity - click to secure your account”
- “You have an unpaid bill - pay immediately”
An SMS may technically look simple, but it could still be part of a sophisticated scam. Don't indiscriminately click on links in unexpected messages.
What is AIT - artificially inflated traffic?
AIT stands for artificially inflated traffic. This means artificially inflated traffic where scammers or automated bots trigger large volumes of SMS messages without legitimate user interest.
AIT is often seen in connection with login, registration, OTP codes, forms and verification flows. For example, an attacker can use bots to submit phone numbers over and over again, causing the system to send many SMSs. This can create unnecessary costs, disrupt reporting and, in the worst case, damage delivery quality or the sender's reputation.
Typical signs of AIT can be:
- Sudden increase in SMS traffic without corresponding sales, logins or activity
- many messages to specific countries or number ranges
- Repeated attempts from the same IP, device fingerprint or user flow
- High traffic without subsequent validation or conversion
- abnormal patterns at times when normal user activity is low
Want to better protect your SMS traffic?
SureSMS helps with SMS gateway, API, monitoring, country rules and advice to make your communication more secure and controlled.
Talk to SureSMSHow businesses can reduce risk
There is no single solution that will stop all fraud. But companies can significantly reduce the risk by combining technical controls, clear communication and continuous monitoring.
1. Be clear about how you communicate
Let customers know what channels you use, what types of messages they can expect and what you will never ask them for via SMS or email. This makes it easier for customers to recognize suspicious messages.
2. Use recognizable and consistent senders
The more consistent the sender identity and tone, the easier it is for the recipient to detect deviations. Avoid unnecessary changes in sender names, links and wording.
3. Protect forms and OTP flows from AIT
Use rate limiting, CAPTCHA where it makes sense, risk scoring, country restrictions, IP checks and conversion pattern monitoring. It's not just about sending the SMS - it's about detecting when traffic doesn't look like real users.
4. Monitor links and domains
Use trustworthy domains and avoid random URL shorteners. A link with poor history can affect both delivery and recipient trust.
5. Respond quickly to abuse
If spoofing, smishing or AIT is suspected, you should react quickly. This can include stopping traffic, blocking destinations, changing flows, alerting customers or reviewing log data.
What should recipients be aware of?
As a recipient, you should pay extra attention if a message urges you to act quickly, asks for login details, demands payment via an unknown link or comes unexpectedly.
If in doubt, don't click. Instead, go directly to the company's official website or contact them through a known channel.
Conclusion: Secure SMS requires both technology and trust
Spoofing, phishing, smishing and AIT show that secure communication is about more than the message itself. It's about sender identity, user behavior, technical monitoring, link hygiene and the ability to detect abnormal patterns.
SMS is still a powerful channel - but it needs to be used professionally. When companies actively work with security, clarity and control, SMS becomes both more effective and more trustworthy.