What is Man-on-the-side Attack? How to Stay Secure Against It?

Haseeb Awan
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May 24, 2023
Modified On
May 24, 2023


As technology develops, so do cybercriminals' methods to hurt other people. The man-on-the-side attack is one such tactic that can seriously harm both people and businesses. This attack involves the attacker listening to two parties' conversations while the targets are unaware. The attacker then modifies the communication, which may have various unfavorable effects. I'll go over the man-on-the-side attack's definition and methodology in this post. I will also offer some advice on safeguarding yourself against this kind of attack online, such as using a secure VPN, being selective about the websites you visit, and maintaining the most recent version of your software.

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What is Man-on-the-Side Attack?

Hackers use the man-on-the-side (MOTS) attack, a kind of cyberattack, to intercept and change data in real-time. In contrast to conventional attacks, where hackers infiltrate a system and steal data before leaving, MOTS attackers stay hidden inside the system and manipulate the data as it is transferred between two parties. This attack is particularly hazardous because it is challenging to identify and prevent.

Attackers intercept data packets that are being sent between two parties using a method known as packet injection. After capturing the data packets, the attacker can alter them to insert malicious code or reroute the data to a different server. This attack is exceedingly challenging to identify because the end user must know that their data has been collected and altered.

MOTS assaults are typically directed at particular people or organizations, which makes them increasingly harder to fight against. Several high-profile MOTS attacks have occurred in recent years, notably the JPMorgan Chase breach 2014 that exposed the data of over 76 million households and 7 million small businesses.

It's critical to comprehend the dangers of MOTS assaults and take precautions to safeguard your business and yourself. In the following sections, we'll review the typical methods employed by attackers and offer advice on how to repel these kinds of attacks.

How Does a Man-on-the-Side Attack Work?

A cyberattack known as a "Man-on-the-Side" (MOTS) attack entails intercepting and changing communications between two parties. In this attack, the attacker positions themselves between the two parties communicating, allowing them to intercept and modify the data sent to achieve their goals.

The attacker's job is to listen in on the two parties' conversations without either realizing it. It is done by intercepting and altering the data packets sent between the parties. Before sending the information to the target recipient, the attacker will change it to fit their goals.

Compromise of the security of a network or system that both parties utilize is one typical way to carry out a MOTS attack. It could entail breaking into the network using malware or other malicious software or taking advantage of flaws in the software or hardware. The data packets transferred between the two parties can be intercepted and changed if the attacker has acquired access.

Also possible are MOTS assaults utilizing the "packet injection" method. Alter the communication's outcome, which entails introducing phony data packets into the communication stream.

It's critical to be informed about the dangers of a MOTS assault and to take precautions to keep oneself safe online. It can involve using secure passwords, updating software regularly, whenever possible, using two-factor authentication, and being careful while accessing open Wi-Fi networks. In addition, you should seek professional help immediately if you think your network or system has been compromised to limit further harm.

Standard Techniques Used in Man-on-the-Side Attacks

Online man-on-the-side (MOTS) attacks can be challenging to identify and stop. Many times neither party is aware that their communication has been hacked as attackers utilize a variety of tactics to intercept and alter communications between two parties.

Packet injection is one of the methods employed in MOTS attacks most frequently. The attacker must intercept and alter data packets being exchanged between two parties. The attacker can then add their information or instructions to the communication stream, causing harm or stealing confidential data.

Session hijacking is another tactic employed in MOTS attacks. The session ID of the victim is stolen in this kind of attack, which allows access to multiple services and resources by authenticating the victim's identity.

Another typical method used in MOTS assaults is DNS spoofing. In this attack, the attacker modifies the DNS resolution procedure to reroute the victim's traffic to a malicious server under the attacker's command. It lets the attacker listen to and control the victim's communication secretly.

It's crucial to be aware of these typical MOTS attack strategies so you can take precautions to keep yourself safe online. You can safeguard yourself against these kinds of assaults by using secure and encrypted communication channels, updating your software and hardware often, and avoiding insecure public Wi-Fi networks, to name a few strategies.

Who is Most at Risk for a Man-on-the-Side Attack?

Any internet user could be vulnerable to a man-on-the-side assault. However, some groups are more prone to be targeted than others. For instance, people who frequently access public Wi-Fi connections, like those in coffee shops, airports, and hotels, are more vulnerable. It is so that hackers searching for weak targets may readily monitor these networks, which are frequently insecure. You might be in danger if you often visit websites requiring sensitive information like banking or healthcare services. These websites may be a specific target for hackers looking to get personal data such as medical records, credit card details, and SSNs.

It's crucial to remember that a man-on-the-side attack can happen to anyone, even though some groups may be more vulnerable. It would assist if you took the necessary safeguards to protect yourself when using the Internet and accessing sensitive information online.

Real-world Examples of a Man-on-the-Side Attack

A sophisticated type of cyberattack known as a "Man-on-the-Side" (MOTS) assault manipulates material by intercepting communications between two devices. The Stuxnet infection, deployed to assault Iran's nuclear program, is one instance of a Man-on-the-Side attack that occurred in the real world.

The centrifuge controllers in Iran's nuclear facilities were controlled by programmable logic controllers, which were the target of the sophisticated worm attack. By taking advantage of Microsoft Windows's flaws, the worm could break into Iran's protected networks and spread until it reached the target computers.

The 2015 Great Cannon attack against GitHub illustrates a Man-on-the-Side attack. The central code-sharing platform GitHub's services were to be disrupted by The Great Cannon, a state-sponsored cyberattack from China. The hack diverted Massive traffic volumes to GitHub's servers, which overloaded the servers and interfered with their services.

These instances show the Man-on-the-Side attack's strength and sophistication and how it may be used to harm people, businesses, and even entire countries seriously. Understanding the dangers presented by these assaults and taking preventative measures to safeguard your online identity and data are vital.

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How to Detect a Man-on-the-Side Attack

Cyber attacks of the Man-on-the-Side (MOTS) variety are notoriously challenging to identify. In this attack, the attacker intercepts data being transmitted back and forth between two parties, as between you and a website. The attacker then discreetly modifies the data before it gets to its destination. It is likely to accomplish this without the sender or the recipient realizing something needs to be fixed.

Although it is difficult to spot a MOTS attack, there are several warning indications you may watch out for. Your internet activities may feel slower than usual, which is one of the critical signs. Additionally, you might need help connecting to specific websites or online services. Occasionally, You could encounter error warnings or get forwarded to another page. Pay close lookout to any modification in your online behavior is crucial, as these warning flags can be subtle.

A secure browser or a VPN is another approach to spot a MOTS assault. Your internet activity is encrypted using these methods, making it far more complex for hackers to access and change your data. Using a VPN or encrypted browser can dramatically lower your chance of being the target of a MOTS attack, even if no product will fully protect you from one. Additionally, it's crucial to maintain your operating system and software up to date because updates frequently include security patches that fix known vulnerabilities.

The Right Steps to Consider If You Suspect You Might Have Been a Target of a MOTS Attack

You must react quickly to protect yourself if you believe you are a Man-on-the-Side (MOTS) attack victim. You can follow the instructions listed below:

1. Disconnect from the Internet – It's crucial to disengage as soon as you believe you are being targeted.

2. Change your passwords – Change the credentials for all your online accounts, including your social media, email, and banking accounts. 2. For every account, use a strong and different password.

3. Update your software – Ensure that your operating system, web browsers, and plugins are all current with the most recent security patches.

4. Conduct a malware scan – Conduct a malware scan on your computer to look for any potentially harmful programs that may have been installed without your awareness.

5. Call your bank or credit card company – Call your credit card company or bank instantly to report any unauthorized activities if you believe your financial information has been compromised.

6. Get in touch with law enforcement – If you believe you may have been the prey of a MOTS attack, you should notify the police immediately.

Following these instructions can lessen the effects of a MOTS attack and defend yourself from more harm. It's crucial to take precautions to safeguard oneself online before an attack happens since, as they say, prevention is always preferable to cure.

How to Protect Yourself From Man-on-the-Side Attacks

Man-on-the-Side (MOTS) assaults are on the rise. Therefore, it's critical to understand how to defend oneself. Observe the following advice:

1. End-to-end encryption ensures that only the intended recipient and the sender can read the sent communications. It stops any outsider from intercepting and tampering with your data.

2. Use a virtual private network (VPN): It safeguards your online identity by encrypting your internet traffic and hiding your IP address. As a result, hackers find it more challenging to steal your data.

3. Maintain software updates: You may be confident you have installed the most contemporary security fixes. It aids in securing your system from flaws that attackers may exploit.

4. Use two-factor authentication: Two-factor authentication gives your online accounts an additional layer of security. As a result, even if an attacker knows your password, accessing your accounts will be challenging.

5. Be cautious of public Wi-Fi: Be cautious when utilizing public Wi-Fi connections because they are frequently unencrypted, which makes it simple for hackers to intercept your data. Avoid accessing confidential information or signing into personal accounts using public Wi-Fi networks.

By adhering to these recommendations, you can defend yourself from Man-on-the-Side attacks and keep your data secure online.

Additional Measures to Secure Your Online Presence

You can further secure your online presence while still being protected against the Man-on-the-Side assault by implementing the strategies we've just discussed. Implement two-factor authentication (2FA) as one of your first steps whenever possible. Requiring a code created by an app or delivered to your mobile in addition to your password; adds a degree of security to your accounts.

Utilizing a VPN when accessing the Internet, especially public Wi-Fi, is a crucial step. When you use a VPN, your internet traffic is encrypted, making it much more complex for hackers to access and alter your data.

Additionally, you must ensure that your software and hardware are constantly updated with the most recent security fixes. Attackers frequently use flaws in out-of-date software to access your machine.

Last, watch for any strange behavior on your accounts, such as unauthorized logins or emails requesting personal information while posing as coming from a reputable source. You may dramatically lower your risk of becoming a victim of a Man-on-the-Side attack or any other type of online attack by staying vigilant and adopting some extra precautions.


In conclusion, hackers and cybercriminals can conduct Man-on-the-Side (MOTS) assaults, which pose a severe risk to online security. These attacks are significantly more harmful since they can go unseen and undiscovered.

Use secure connections and avoid public Wi-Fi networks to safeguard against these assaults. Additionally, you may defend yourself from these attacks and encrypt your data using VPNs.

Additionally, it's critical to avoid clicking on dubious links or downloading unknown files and keep your software and security programs updated.

Finally, the best way to defend yourself from MOTS attacks is through awareness and education. You can stay safe and secure online by keeping up with the most recent dangers and taking the proper steps to safeguard yourself and your information. Keep in mind that precluding is always preferable to treatment. Keep an eye out and be careful!

This article should have assisted you in comprehending more about man-on-the-side attacks and how to defend yourself. Being aware of the possible hazards and vulnerabilities associated with online activity is more crucial than ever, given the daily increase in activity on the web. You can secure your personal information from anyone who could misuse it by following the advice I've given in this piece to be safe online. When you're online in the future, keep these tips in mind and be cautious!

Haseeb Awan
CEO, Efani Secure Mobile

I founded Efani after being Sim Swapped 4 times. I am an experienced CEO with a demonstrated history of working in the crypto and cybersecurity industry. I provide Secure Mobile Service for influential people to protect them against SIM Swaps, eavesdropping, location tracking, and other mobile security threats. I've been covered in New York Times, The Wall Street Journal, Mashable, Hulu, Nasdaq, Netflix, Techcrunch, Coindesk, etc. Contact me at 855-55-EFANI or haseebawan@efani.com for a confidential assessment to see if we're the right fit!

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