SMS hacking is a dangerous activity where malicious individuals use SMS and other mobile messaging apps to carry out cyberattacks. They do this by using harmful software and websites to cause harm to users. Mobile users worldwide have experienced SMS hacking attempts, and many have fallen victim to it. SMS attacks such as hacking and smishing have increased over the years. According to reports, 74% of organizations have experienced threats through text messages as it exists as a crucial everyday communication and marketing channel.
SMS hacking aims to access confidential information and data such as passwords, banking details, credit card numbers, etc. Criminals know mobile users are likely to click on links sent as text messages. It will give them instant access to the recipient’s device and accounts. Statistics show that 8.9 to 15 percent of mobile users who received hacking via SMS have clicked on links, especially if it seems to come from a trusted source. It is easy to mislook hack text and spy text senders, and lack of variation on the part of the users often leads to SMS hacking. This article will give us more information about the different SMS hacking types, how it works, and how to prevent attacks.
What is SMS Hacking?
SMS hacking is a malicious activity done by cybercriminals to gain unauthorized access to a person’s cell phone or mobile device. It is usually done through social engineering techniques combined with malicious software programs and websites designed to exploit the vulnerabilities of mobile devices. However, SMS hacking can gather confidential information such as financial data, passwords, and other personal information. It is most commonly used to spread malicious messages, such as phishing campaigns, smishing attacks, malware attacks, sign-up scams, and other malicious activities.
Malicious text messages, known as SMS attacks, can contain harmful software that can cause various problems once it infects a device. SMS malware and text messaging attacks can affect all mobile devices. However, devices that run on Google’s Android platform are more vulnerable to such attacks because Android runs on most smartphones and tablets. Although many believe Apple’s iOS is malware-free, SMS malware can still target it.
Malware and hacking through SMS are becoming more common every year and will continue to be a danger to people who use mobile devices. All mobile users should be concerned about these attacks, as they can cause serious problems.
How Does SMS Hacking Work?
The process of SMS hacking includes four steps: preparation, distribution of the malicious code or software to mobile devices; exploitation of the vulnerability in software or websites; and execution of a cyberattack.
- 1. Preparation
During this phase, the malicious actor acquires and develops a malware program or website designed to exploit mobile devices. They may also create fake names and websites to distribute their malicious code. They would start gathering phone numbers to send the malicious program or link. These numbers could come from social media accounts, online directories, or mobile phone logs.
- 2. Distribution
In this step, the malicious actors will send their malicious code or link via text message to as many people as possible. The messages sent may look like they come from trusted sources and contain a compelling message that encourages recipients to click on the malicious link or download the attached file.
- 3. Exploitation
In the third phase, cybercriminals have successfully baited users to interact with threats and compromise themselves. The malicious code or link will then exploit the vulnerability in a device that allows it to access the user’s data and accounts. Exploitation may also involve communicating with the recipient to gather login access, passwords, and other financial data by playing on their emotions.
- 4. Execution
In this last step, the malicious actors can access the victim’s private data, such as credit card information and other confidential data, or perform other criminal activities. They may also use the stolen information to extort money from victims or install ransomware to lock users out of their devices and demand payment in exchange for unlocking them.
Attackers prepare for a mobile subscriber network threat by finding ways to share it and setting up channels to deliver their malicious software or harvest user information. They then expose users to danger through their prepared distribution method.
SMS hacking differs from other threats, relying on social engineering tactics to trick victims into compromising themselves. Urgency is a common tactic attackers use to manipulate victims into taking action. Once a victim clicks on a link, the attacker gains control over their device and any connected services.
While some SMS-based attacks may not follow the above pattern, most commonly used attacks follow the distribution and exploitation model explained earlier. SMS attacks can harm individual users and mobile service providers by damaging their reputations and causing network congestion.
What is the Objective of SMS Hacking?
SMS hacking aims to access confidential information and data such as passwords, banking details, credit card numbers, etc. It is also used to spread malware and malicious links, which can be used to gain access to the mobile device or computer of the recipient. Attackers may also use SMS hacking to extort money from victims by threatening them with malicious code or demanding payment in exchange for unlocking their devices.
SMS malware is a type of threat that spreads through text-based mobile messaging services like SMS. It usually happens during an attack and can lead to the infection of users. The term suggests that the threat involves using text messaging and malware maliciously.
Although the name implies that this malware spreads only through SMS texts, it can also apply through other methods. The malware can be transmitted through various messaging applications, including data-based mobile messaging services such as WhatsApp, Apple iMessage, and Facebook Messenger.
Users may be infected by SMS malware through various channels other than mobile texting, such as emails, websites, and other networked services. These sources can deliver malware that triggers SMS attacks, and users may unknowingly spread SMS-based malware threats.
What Will Happen If You Received a Hack Text?
You still have options if you received a message you now recognize as a hacking text message. You can immediately delete the message without opening it, preventing further exposure to potential malware. If you opened the message, do not click on any links or download any attachments.
You also have the option to report the said message to the authorities. Depending on your location, you may need to contact a government agency or local law enforcement to report the incident and stop further damage.
What Will You Do If You Accidentally Click the Malicious Link on the Text Massage?
If you accidentally click on a malicious link in an SMS message, you must take action immediately. It is recommended that you change your passwords ASAP. It includes resetting your online banking and any other passwords you have stored online. Doing this will make it harder for someone to hack into your account. It’s essential to use a different password for each account instead of using one password for all your online accounts.
Cancel the cards from your banks if you have given information through sign-up forms or via communication with the SMS hackers. Do not give out OTPs and other forms of 2FA information, such as codes from your banks.
You should also perform a security audit of your device to ensure no malicious software runs. Consider installing anti-virus and anti-malware programs to scan for any malicious files or programs that might have been installed.
Knowing the Signs of Text Scams is vital in preventing SMS attacks from happening to you and your loved ones.
Does SMS Hacking Work Only for Mobile Phones?
Although the name implies that malware and phishing activities are only spread through SMS texts, it is essential to note that they can also spread through other methods of communication. Attackers may use email, websites, and other networked services to spread malware or phishing scams.
One of the common ways for a secondary “hijack” threat to occur is through malicious apps, emails, and social media posts or messages. The malicious code can exploit a user’s contact list to send SMS attack messages in such cases.
A sophisticated attack may involve the attacker’s code taking control of a user’s mobile device and turning it into a botnet. With this control, the attacker can send commands and go beyond set actions, such as gathering the user’s contacts to target a more significant attack or carry out DDoS attacks. Sometimes, a backdoor will be created, posing a persistent threat.
What are the Types of Attacks you can Receive Through SMS?
Criminals create various types of SMS attacks to target mobile devices continuously. Depending on the type of attack, you might receive messages that appear to be from a legitimate business or service provider but contain malicious links or commands. Some of the most common SMS attacks include Smishing, malware for mobile devices, and sign-up scams.
- 1. Smishing
“Smishing” is a type of SMS phishing where an attacker pretends to be someone trustworthy through text messages to trick users into giving away sensitive information or infecting their devices with malware. The attacker may ask for money or confidential data, such as banking details or account credentials.
Phishing has been a typical cyberattack for years because people tend to trust messages from familiar sources. Even experienced internet users can be fooled by urgent messages containing harmful links or attachments.
Read How to Prevent Smishing to learn how to handle SMS phishing messages when you receive them.
- 2. Malware for Mobile Devices
Mobile malware refers to malicious software specifically designed to run on mobile devices. Cybercriminals create and distribute this malware to infect a victim’s mobile device. Such attacks are sometimes carried out through SMS attacks like smishing. Common culprits behind these attacks include:
- Virus – This message means that a harmful program can attach itself to a real app on your device and then run and make duplicates of itself when that app is used.
- Trojan – Refers to an app or file that looks harmless but could be malware or have harmful content.
- Ransomware – This message means that someone has locked your device data and is asking for money to unlock it.
- Clickjacking – Masking interactions with your device can trick you into taking compromising actions.
You may also read more about SMS bots to ensure that your automated SMS marketing messages will not be reported as spam text.
- 3. Sign Up Scams
Premium-rate or and other text scams occur when users unknowingly sign up for subscription messaging services without permission. As a result, victims may receive unexpected charges on their phone bills and may even unknowingly pay the attacker if the criminal operates these services.
Scammers offer SMS sign-up services, which could include daily horoscopes or other services. Although these services can be legitimate, attackers exploit them to cause problems or make money.
Malware like Trojans can infect devices and make the user unintentionally join premium-rate services. These malicious programs can make unauthorized calls or send unauthorized texts, which will be charged as premium SMS texts or premium-rate numbers. It generates revenue for cybercriminal networks.
What are Examples of an SMS Attack?
Over the years, there has been an increase in SMS attacks, mainly due to the rise of mobile users worldwide. Here are some recent examples that you should know about.
Filecoder — Android SMS ransomware
A new ransomware called Android/FileCoder.C was reported to be targeting Google Android devices in July 2019. This ransomware spreads through text messages and can encrypt your phone files, making them inaccessible. Attackers may demand a ransom in exchange for access to your files.
Since July 2019, a threat has been circulating on web forums like Reddit which involves pornographic content. The links to such content are usually hidden under URL-shortening services like bit.ly. No new information is being added, and the language code is also unchanged.
The link infects Android-based devices with malware that sends a harmful text link to all their contacts. The link advertises an app that, if installed, will activate ransomware in the background without the victim’s knowledge.
Emotet — SMS Phishing and Malware/Trojan
In early 2020, cybercriminals used a banking trojan called EMOTET to trick customers via text messages. They pretended to be trusted US banks and sent urgent messages with fake issues like “Savings Bank ACC LOCKED” and a suspicious web link. The messages looked like standard automated alert texts with local phone numbers. The customers were deceived into giving up their credentials and infecting their devices with malware.
If they click on the harmful link, they will be taken to a fake bank login page where their account details will be accessed without their knowledge if they enter them. In the second phase of the attack, victims must download a document containing malicious code in macros.
Emotet is a significant threat due to its worm-like replication and ability to evade anti-malware measures. The malware has been spreading since 2014, using different methods and channels, and has recently been delivered through smishing attacks. Its continuous evolution makes it a threat that requires attention.
How to Prevent SMS Hacking and Attacks?
Text messages are becoming more advanced and tricky, sometimes causing uncertainty among mobile users about the authenticity of the messages they receive. To help you safeguard yourself, here are some essential tips to consider:
- Slow down and act cautiously – If you receive an urgent message, it’s a warning to evaluate it carefully. Contact the sender through a verified method, like the official phone number listed on their institution’s website or a known personal number. It applies even if the message appears to be from someone you know.
- Monitor your phone bills – If you notice any unwanted charges, you might be involved in a scam. Therefore, report them and initiate a dispute when you uncover them.
- Keep an eye for detail – Messages with unusual spelling, grammar, and phrasing are probably from something other than official institutions. Unlike most SMS attacks, official correspondence is written carefully and typically undergoes review.
- Verify senders – It is essential to be careful with people who are not in your contacts, but it is also vital to exercise caution with friends and known contacts. If you receive unexpected links, be cautious and verify with someone outside of texting to ensure safety.
- Do not open links directly – It’s better to visit the official website of trusted organizations like your bank to verify their authenticity rather than click on a suspicious link.
- Installing effective anti-malware software – You can defend your mobile devices against SMS attacks initiated by Trojans and other malicious threats. Anti-malware software can detect and block malicious links before they reach your device. Additionally, anti-malware programs can scan incoming messages and files, identify potential threats, and keep them from affecting your devices.
Is there an Anti-Virus for Mobile Phones?
Several antivirus solutions for mobile phones protect against SMS attacks and other malicious threats. These anti-virus solutions detect and block potentially dangerous links, scan incoming messages for potential threats, and remove malicious apps from your device. Additionally, some anti-virus solutions can monitor suspicious activities on your phone to prevent any malicious activity from occurring.
It would be best to use a reputable anti-virus solution with regular updates and an excellent reputation to ensure maximum protection. Additionally, it would help if you kept all of your apps and software updated to the latest versions to reduce the chances of falling victim to an SMS attack.
Does the SMS Attack Only Execute Once You Click a Link?
Yes. In most cases, SMS attacks only execute once a person clicks on a malicious link. Once the person clicks on the link, hidden malicious code will be downloaded to their device and compromised. It is essential to exercise caution when clicking any links from unknown sources or suspicious text messages. SMS hacking and other types of attacks through text messaging only become a threat once the person takes action and clicks on the malicious link.
Are Android Phones Vulnerable?
Yes, Android phones can be vulnerable to SMS attacks if users don’t take proper precautions. Android devices are particularly susceptible due to their wide range of features and open-platform nature. As such, ensuring your device is protected by reliable anti-virus software and that you are cautious when clicking on links in texts or emails from unknown sources is crucial. Additionally, it is vital to keep your apps and software updated to the latest versions to reduce the chances of falling victim to an SMS attack.