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What is keylogging?

Keylogging, short for "keystroke logging," is a method of covertly capturing and recording keystrokes made on a computer or other input device, like a keyboard. This technique is commonly employed by malicious software, known as keyloggers, to track and monitor user activity without their knowledge or consent. Keylogging can capture sensitive information and other personal data, posing significant security risks to individuals and organizations. While some keyloggers operate locally on a single device, others can transmit logged data remotely to a third party for exploitation or analysis.


Keylogging, or keystroke logging, is a covert method used by hackers and cybercriminals to monitor and record keystrokes on computers and other input devices. It aims to capture sensitive user information such as usernames, passwords, credit card numbers and other confidential information without consent, creating a security risk.

There are various types of keyloggers, including software-based keyloggers that install covertly on a device, and hardware-based keyloggers that physically attach to keyboards or other input devices. Some keyloggers operate locally, storing the captured data on the compromised device, while others can transmit the logged information remotely to a third party for exploitation or analysis.

Keyloggers target computers and mobile devices such as smartphones and tablets. With the increasing use of mobile devices for various online activities, including banking and shopping, mobile keyloggers pose a serious threat to user privacy and security. Mobile keyloggers can capture sensitive information entered via touchscreens, including passwords, PINs, and authentication credentials.

The primary purposes of keylogging include identity theft, financial fraud, espionage, and unauthorized access to sensitive systems or accounts. To counter this threat, individuals and organizations must employ robust cybersecurity measures, including updating devices regularly, using reputable security software, and exercising caution with apps and links. Maintaining awareness of keylogging indicators, such as unusual system behavior, is essential for timely detection and mitigation of potential threats.

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Preventing keylogging

These steps can safeguard your devices from keyloggers:

  1. Regularly update your system to prevent vulnerabilities exploited by keyloggers and malware.
  2. Use a password manager to secure passwords and avoid browser-built-in managers.
  3. Set up a firewall to monitor internet traffic for suspicious activity.
  4. Install antivirus software to detect and eliminate keyloggers.
  5. Change passwords regularly and implement multifactor authentication.
  6. Practice caution by avoiding suspicious downloads and links.

Signs of keylogging

The warning signs for detecting a keylogger program are slow browser performance, delayed mouse movements or keystrokes, or a cursor that intermittently disappears. Even the most privacy-focused browsers can't always evade keylogging. However, some symptoms attributed to keyloggers might stem from ageing or cluttered devices or could be indicative of other malware such as adware. Moreover, keyloggers may camouflage themselves as genuine programs, complicating their detection process.

Keylogging iPhones

You can identify the presence of a keylogger on your iPhone or Mac through various methods such as observing the device's performance, monitoring notifications from two-factor authentication (2FA) systems, or scrutinizing for any unfamiliar applications installed on your phone.

Presence of a keylogger may manifest in increased data usage and frequent freezing of your phone due to background processes. Additionally, overheating and background noise during phone usage could indicate the presence of such software.

Keylogging Android

An Android keylogger operates discreetly in the background of your device, recording the keystrokes made on your phone or tablet. Subsequently, this information can be transmitted to a hacker who may exploit it to gain access to sensitive accounts.

Unusual battery drainage, overheating, strange texts, random restarts, and sluggish performance may signal a keylogger, as they drain the battery, strain the processor, install via texts, and disrupt system operations.

Detecting and preventing keylogging

Detecting keylogging involves monitoring unusual behavior such as rapid battery drainage, overheating, or unexpected system restarts on your device. Stay vigilant by regularly checking your phone's downloads and running antivirus software to identify and prevent keyloggers from infiltrating your device. Additionally, exercise caution when receiving suspicious texts or emails, as these may contain links or attachments used to install keylogging software.


  1. Phishing emails: A user receives an email appearing to be from a legitimate source, such as a bank or a reputable company, asking them to click on a link to verify their account details. Unbeknownst to the user, the link installs keylogging software on their device, allowing the attacker to capture their keystrokes and steal sensitive information like usernames and passwords.
  2. Malicious websites: A user visits a compromised or fake website that prompts them to download a seemingly harmless file or plugin. Upon installation, the file or plugin contains hidden keylogging software, which silently captures the user's keystrokes, compromising their login credentials and other personal information.
  3. Infected USB drives: An employee plugs in a USB drive found outside their workplace, believing it to be lost property. Unbeknownst to them, the USB drive contains malware, including keylogging software, designed to infect any system it connects to. The keylogger records the employee's login credentials, allowing the attacker to gain unauthorized access to the company's network and sensitive data.


Keylogging has its roots in legitimate software development, initially designed for debugging and monitoring purposes. The earliest forms of keyloggers were created in the 1970s and 1980s to track user activity for troubleshooting software issues or studying user behavior. However, as computer technology evolved, malicious actors recognized the potential of keyloggers for unauthorized surveillance and data theft, leading to the development of more sophisticated and covert keylogging techniques for nefarious purposes. Today, keyloggers are widely used by cybercriminals for stealing sensitive information such as passwords, credit card numbers, and personal messages.