Account Takeover / Credential Stuffing

Major Types of Account Takeover Fraud

April 19, 202312 min Read

account takeover attack

What is Account Takeover fraud? This threat is a type of identity theft where criminals gain access to someone's personal details in order to commit fraud. This can be done by compiling a list of validated credentials and selling or abusing them. Account takeover (ATO) attacks are a growing concern in today's digital age. With more and more transactions occurring online, threat actors have adapted their tactics to take advantage of the convenience and speed of digital transactions. ATO occurs when a bad actor gains access to a victim's account—typically related to finances, email, social media, and much more—and uses it for malicious purposes.

One of the most effective ways to combat an account takeover is to understand the major types of fraud that are commonly used by bad actors. By understanding how these attacks work and the tactics fraudsters use, individuals and businesses can take proactive steps to protect themselves and their customers.

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The Economics of Account Takeover Attacks
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The Economics of Account Takeover Attacks

Types of Fraud for ATO

Fraud related to ATOs has become a growing concern for businesses and individuals alike. With the increasing prevalence of digital transactions and the widespread use of online accounts, it has become easier for fraudsters to gain unauthorized access to personal and financial information. As a result, businesses looking to protect themselves need to understand these main types of fraud in ATO:

Phishing and social engineering

Phishing and social engineering are two tactics commonly used in this threat. These threats involve tricking individuals into providing sensitive information, such as login credentials or credit card numbers, by posing as a trustworthy entity, such as a bank or a well-known brand. These attacks can take various forms, including email address, text messages, or fake websites.

Social engineering, on the other hand, involves manipulating individuals into divulging sensitive information by exploiting their trust or emotions. Social engineering attacks can take many forms, such as pretexting, baiting, or quid pro quo schemes. These threats are both used in conjunction with each other to gain access to accounts and steal valuable information.

Phishing and social engineering attacks can be particularly effective with this threat, as scammers take over access by capitalizing on the weakest link in the security chain—human behavior. A successful attack can provide a fraudster with the login credentials they need to access an account, bypassing any security measures put in place by the account owner.

Account takeover scammers may use sophisticated social engineering tactics to gain access to accounts, including targeted attacks tailored to a specific individual or organization. As such, it is crucial for individuals and organizations to be vigilant against these tactics and to take proactive measures to protect against them, such as implementing two-factor authentication and training employees on how to spot and avoid social engineering attacks.

Credential stuffing and password cracking

Credential stuffing and password cracking are two tactics commonly used in this type of fraud. Credential stuffing involves using a large set of stolen login credentials to gain unauthorized access to accounts. This tactic relies on the fact that many individuals reuse passwords across multiple accounts, making it easier for fraudsters to gain access to their accounts using stolen credentials.

Password cracking, on the other hand, involves using automated tools to guess passwords by brute force. Password cracking attacks can take many forms, such as dictionary attacks or rainbow table attacks, and can be successful if the password is weak or easily guessable. Both credential stuffing and password cracking can be used in conjunction with other tactics, such as phishing and social engineering, to increase the chances of success in account takeover fraud.

Credential stuffing and password cracking attacks can be particularly effective in account takeover fraud, as they can bypass many security measures put in place by account owners. For example, two-factor authentication may be rendered ineffective if a fraudster has already gained access to an account using stolen credentials. Also, the use of automated tools in password cracking attacks can make it difficult for security teams to detect and prevent these attacks.

SIM Card Swapping

SIM card swapping is a popular technique used by cybercriminals to facilitate account takeover fraud. By swapping a victim's SIM card to a new one controlled by the attacker, bad actors can take over the victim's phone number and use it to reset passwords and gain access to their accounts. This type of fraud is especially dangerous because many people use their phone numbers as a form of two-factor authentication, making it easier for the attacker to take over their accounts.

SIM card swapping is just one of the many tactics used by attackers to gain access to sensitive information and steal money from unsuspecting victims. To prevent account takeover fraud, individuals should take steps to protect their personal information, such as:

  1. use strong, unique passwords for each account
  2. enable two-factor authentication with an authenticator app or physical security key
  3. monitor accounts regularly for suspicious activity

Businesses can also implement security measures such as multi-factor authentication, fraud detection software, and employee training to reduce the risk of account takeover fraud.

Malware and Mobile Banking Trojans

Malware and mobile banking trojans are types of malicious software that cybercriminals use to steal sensitive information and facilitate account takeover fraud. Malware can infect a victim's device in a variety of ways, such as through email attachments, malicious websites, or software downloads. Once installed, malware can capture keystrokes, take screenshots, and access sensitive information stored on the device.

Mobile banking Trojans are a specific type of malware that targets mobile devices, particularly those used for online banking. These Trojans can mimic legitimate banking apps, tricking victims into entering their login credentials and other sensitive information. Once the attacker has this information, they can access the victim's bank account and make unauthorized transactions. This type of attack is becoming increasingly common as more people use mobile devices for banking and financial transactions.

Man-in-the-Middle (MITM) Attacks

MITM attacks are a common form of cyberattack in which a threat actor intercepts communication between two parties and injects their own data into the conversation, unbeknownst to either side. This type of attack can be used to steal sensitive information such as passwords, credit card numbers, and other personal data.

MITM attacks can occur in a variety of ways, including through the use of public Wi-Fi networks, phishing attacks, or malware-infected software. In the context of account takeover fraud, MITM attacks can be particularly devastating, as they allow an attacker to intercept and hijack a victim's login credentials, essentially taking control of their online accounts.

MITM attacks can be especially dangerous when they are used in combination with other attack techniques, such as phishing or social engineering. For example, an attacker might use a phishing email to trick a victim into entering their login credentials into a fake website. The scammer can then intercept these credentials using a MITM attack and use them to take over the victim's account. This type of attack can be difficult to detect, as the victim may not realize that their login credentials have been compromised until it is too late.

How to Spot and Prevent ATOs

For businesses, one effective strategy for preventing ATO attacks is to implement strong authentication and access controls. This can include using multi-factor authentication, requiring users to create strong passwords and change them regularly, and limiting access to sensitive data to only authorized personnel.

Businesses should also monitor accounts for suspicious activity, such as unusual login attempts, changes to account information, and unusual user behavior. This can be accomplished through the use of fraud detection tools and machine learning algorithms that can identify and respond to account takeover attacks in real-time.

Educating customers about ATO risks and encouraging them to take steps to protect their accounts can also be an effective strategy for preventing these threats. This effort includes providing customers with information on how to:

  1. create strong passwords and usernames
  2. recognize and avoid phishing scams
  3. use two-factor authentication

Implementing these best practices and staying vigilant for signs of suspicious activity are two key ways businesses can significantly avoid theft and reduce the risk of ATO attacks—while also protecting their customers' sensitive information from cybercriminals.

Why is account security so important? Find out today!

The Potential Damage of ATO

ATO attacks can have devastating consequences for online businesses. Once an attacker has control of an account, they can steal sensitive information, make fraudulent purchases, and damage the reputation of the business. The potential damage of an ATO attack can be significant and long-lasting, affecting not only the victim but also the business and its customers.

Financial Loss: One of the most significant consequences of an ATO attack is the potential financial loss. Attackers can use stolen login credentials to make unauthorized purchases, drain bank accounts, and steal sensitive financial information. This can result in significant financial losses for both the victim and the business, as well as damage to the business's reputation and loss of customer trust.

Data Breaches: Another consequence of ATO attacks is the potential for data breaches. Cybercriminals can use stolen login credentials to access sensitive data such as personal information, credit card numbers, and intellectual property. This can result in significant financial losses, legal liabilities, and damage to the business's reputation. In some cases, data breaches can even result in regulatory fines and legal action.

Brand | Reputation: ATO attacks can also damage a business's reputation and erode customer trust. If customers become aware of an ATO attack or a data breach, they may lose confidence in the business's ability to protect their sensitive information. This can lead to a loss of customers and revenue, as well as damage to the business's brand and reputation.

Legal Woes: Finally, businesses can suffer from long-term consequences such as lawsuits, regulatory fines, and the cost of repairing any damage done by the attack. All in all, it is crucial for businesses to take proactive measures to prevent ATO attacks and protect their customers' sensitive information from cybercriminals.

How to Protect Your Business from ATO Fraud

To protect your business from ATO fraud, it is essential to take proactive measures to prevent these attacks and detect and respond to suspicious activity.

One of the most effective ways to achieve this goal is to implement strong authentication and access controls. This move can include using multi-factor authentication, requiring users to create strong passwords and change them regularly, and limiting access to sensitive data to only authorized personnel.

Businesses should also monitor accounts for suspicious activity, such as unusual login attempts, changes to account information, and unusual user behavior. This can be accomplished through the use of fraud detection tools and machine learning algorithms that can identify and respond to ATO attacks in real-time.

Another important strategy for protecting your business from ATO fraud is to educate employees and customers about the risks of these attacks and how to prevent them. This training can include information on how to create strong passwords, recognize and avoid phishing scams, and use two-factor authentication.

It’s also essential to have a plan in place for responding to ATO attacks if they occur. This can include identifying and isolating affected accounts, changing passwords and access credentials, and conducting a thorough investigation to identify the root cause of the attack.

Arkose Labs Beats ATOs

Arkose Labs is a top provider of bot management solutions that aid all kinds of businesses in reducing their ATO risk. We use a multi-layered approach to fighting spam and abuse, with advanced algorithms that identify and challenge suspicious logins and automated anti-fraud measures, such as two-factor authentication. To ensure this capability, we rely on Arkose Matchkey, the strongest CAPTCHA ever made.

Besides offering an easy-to-use API that enables businesses to integrate its solutions into their existing systems, Arkose Labs provides advanced analytics capabilities, allowing businesses to monitor their user activities and spot suspicious behavior. This capability provides insight into criminal activity and ATOs, and the company's platform takes action to prevent them. Arkose Labs also enables businesses to customize rules and policies to enhance the security of their applications and data.

Arkose Labs' comprehensive platform helps businesses safeguard their accounts from ATOs. Its advanced machine learning algorithms and automated anti-fraud measures enable businesses to stay ahead of the curve when it comes to fraud and abuse. The easy-to-use API and customized rules and policies make it a breeze for businesses to add a layer of security to their accounts swiftly and easily.

Contact Arkose Labs today to learn how we can help protect your business.