Form Grabber


A Form Grabber is a type of malicious software designed to intercept and steal data entered into online forms, such as login credentials and personal information. These tools are generally used by cybercriminals for identity theft, unauthorized access, or financial fraud. Form Grabbers usually target web browsers and can potentially compromise sensitive web-based transactions like online banking or e-commerce.


The phonetic transcription of “Form Grabber” is:/fɔrm ˈɡræbər/

Key Takeaways

  1. Form Grabber is a type of malware that intercepts data submitted through HTML forms in web browsers, such as login credentials and personal information, making it a powerful tool for cybercriminals.
  2. This malicious software operates by hooking into the browser process, capturing form data before it is encrypted and sent over the internet, thus bypassing traditional security measures like SSL/TLS encryption.
  3. Protecting against form grabbers requires a combination of up-to-date security software, careful online behavior, and awareness of phishing attacks that attempt to trick users into revealing their information on fake websites.


The term “Form Grabber” is important in the realm of technology, particularly in cybersecurity, as it refers to a type of malware designed to infiltrate and compromise online forms.

Form grabbers are capable of intercepting and extracting sensitive information, such as login credentials, credit card numbers, and personal data inputted by users into online forms.

This type of cyberattack can lead to identity theft, financial fraud, and unauthorized access to accounts.

As a result, being aware of form grabbers and employing adequate security measures, such as strong authentication protocols, encryption, and increased user vigilance, play a crucial role in ensuring the safety of online transactions and protecting users’ personal information from cybercriminals.


Form grabber is a type of malicious software primarily designed to intercept and collect sensitive information entered by users on websites. The primary purpose of this technology is to aid cybercriminals in stealing valuable data, such as login credentials, financial information, and other personal details.

Form grabbers work by injecting themselves into the browser’s process, enabling them to monitor and capture user input in real-time. This method effectively bypasses encryption and other security measures, as it captures the information before it is sent to the website or encrypted by the browser.

Cybercriminals often use the captured information for various illegal activities, including identity theft, financial fraud, and unauthorized access to online accounts. Form grabber technology is typically delivered through malicious emails, exploits, or compromised websites, making it an essential component in the overall strategy of data theft employed by cybercriminals.

Users and organizations must be vigilant in their web browsing behavior and utilize best practices such as up-to-date antivirus software, strong passwords, and multi-factor authentication to protect themselves from the potentially severe consequences of falling victim to form grabber attacks.

Examples of Form Grabber

A Form Grabber is a type of malware that intercepts and collects data entered into web forms. They are often used by hackers to steal sensitive information such as login credentials, personal details, and financial data from unsuspecting victims. Here are three real-world examples of Form Grabber attacks:

Zeus Trojan: One of the most infamous examples of a Form Grabber is the Zeus Trojan, also known as Zbot. This malicious software targeted Windows machines and was primarily used to steal banking information by intercepting user-entered data on banking websites. Zeus was responsible for numerous data breaches, affecting millions of users and causing significant financial losses.

SpyEye: SpyEye is another notorious Form Grabber malware that specifically targeted financial websites and online banking platforms. It was designed to steal sensitive financial data such as login credentials, credit card information, and PIN codes. SpyEye emerged in the late 2000s and was responsible for a large-scale cybercrime spree, resulting in millions of dollars in losses.

IcedID: IcedID, also known as BokBot, is a Form Grabber malware that emerged in 2017 and is still active today. This banking malware is known for its sophistication and stealthy tactics, employing multiple tactics to bypass security measures and evade antivirus detection. IcedID targets both individuals and businesses, stealing sensitive information such as login credentials, financial data, and personal information.These examples showcase the malicious use of Form Grabbers and emphasize the need for robust cybersecurity measures to prevent unauthorized access to sensitive information.

FAQ: Form Grabber

What is a Form Grabber?

A Form Grabber is a type of malware that intercepts data submitted through form fields on a website, such as login credentials, personal information, and payment details. Once the data has been captured, it is usually sent back to the attacker for further exploitation, which can include identity theft or fraudulent transactions.

How does a Form Grabber work?

A Form Grabber typically works by either injecting malicious code into a trusted website or by tricking users into downloading a malicious browser extension. It then monitors user activity on websites and captures the data submitted through the form fields. Form Grabbers can capture data from both HTTP and HTTPS traffic, bypassing some types of encryption and making it difficult to detect by antivirus software.

How can I protect myself from Form Grabbers?

To protect yourself from Form Grabbers, follow these security best practices:

  1. Keep your operating system and all software up-to-date with the latest security patches.
  2. Use a reputable antivirus program and ensure that it is always updated.
  3. Be cautious when downloading and installing new browser extensions or plug-ins.
  4. Avoid clicking on suspicious links or downloading files from unfamiliar sources.
  5. Use strong and unique passwords for each of your online accounts.
  6. Enable two-factor authentication on your accounts whenever possible.

How can I detect if my system has been compromised by a Form Grabber?

Detection of a Form Grabber can be challenging, as they often evade traditional antivirus software. However, you can take the following steps to improve your chances of detection:

  1. Regularly scan your system with a reputable antivirus program.
  2. Monitor your browser extensions and remove any that you do not recognize or no longer use.
  3. Watch for unexpected changes in your browser’s settings, such as a changed homepage or an unfamiliar search engine.
  4. Review your online accounts for suspicious activities or unauthorized transactions.

What to do if my system is infected with a Form Grabber?

If you believe your system has been compromised by a Form Grabber, take the following steps:

  1. Disconnect your device from the internet to prevent further data interception.
  2. Run a thorough malware scan using a reputable antivirus program to remove the malware.
  3. Change all your passwords, especially for financial or personal accounts.
  4. Monitor your accounts for any suspicious activity or unauthorized transactions.
  5. Contact your bank or credit card company if you believe your financial information has been compromised.
  6. Consider seeking professional help from a cybersecurity expert if necessary.

Related Technology Terms

  • Data Theft
  • Keylogging
  • Session Hijacking
  • Malware
  • Phishing

Sources for More Information


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