What is keyloggers and how to defend them?

Keylogger is a program that registers each keystroke. Keylogger in the hands of an attacker - a dangerous weapon that will threaten your privacy.

Keyboard input We use daily. Personal computers, smartphones, ATMs and self-service cash registers have keyboards to enter PIN codes and other information. If we used to act with PCs and phones, then we usually do not wait for ATMs and other devices in public places. And in vain: Keylogger can catch anywhere anywhere.

If the device is infected with a spyware called Keylogger, the introduced information of the IMG will go to the hands of unauthorized persons.

The hazard of the keylogger is that it intercepts the entire text entered from the keyboard, and with it and purely personal information - PIN codes, login, passwords etc. Like any spyware, Keylogger does not seek to give out its presence. To protect yourself from this threat, you need to know how it enters the system and for what features is detected.

What is Keylogger?

Purpose of the keyboard spy - imperceptibly register the user interaction with the keyboard. Keyloggers are two types - software and hardware, that is, as a computer application or physical device. Hardware keyloggers are rarely found, they are implemented as a USB key or webcams. Next, we will talk about the threat of software type.

Keyboard spies are used to abduct payment data that users are injected when shopping.

keyloggers can intercept data not only from computer keyboards. Spyware for this kind is found in the mobile environment. Neither Android, nor iOS is not insured.

How does Keylogger infect the system?

If keyloggers are so dangerous, then they should fall to the user imperceptibly. Indeed, for their distribution , hackers show ingenuity, playing in human weaknesses and sleeping vigilance.


Very popular tactics for the spread of maliciousness of various kinds. This includes fake emails, messages and investments in which the addressees are convinced to click on a dangerous link. What is on the link - one hacker is known.

Trojan programs

Trojan programs can hide everything anything, including keyloggers. Ways of their distribution - email, infected sites, hacked programs.

Troyans-keyloggers are constantly being improved. Their task is to steal payment data entered when shopping on the Internet.

Infected sites

Infected and fake sites hide code that can launch a keylogger installation on your computer. All this happens unnoticed, as hackers use browser and system vulnerabilities to mask their actions.

Already infected system

If your computer, tablet or smartphone is already infected with something, one of the dangerous programs can “pull” a keylogger along with it.

How to detect a keylogger?

Keyloggers do not affect the operation of the infected system. This feature distinguishes them from other malware. The presence of a keylogger does not threaten your personal documents. In a sense, this makes them harder to calculate.

Watch out for minor changes:

  • When typing, letters appear on the screen with a delay of up to several seconds (sometimes they do not appear at all).
  • Device performance degrades, system crashes occur.
  • Graphic content doesn't load well, error messages pop up.
  • There are unknown processes in Task Manager.
  • Anti-Virus warns about a threat.

How to protect yourself from keyloggers?

The best way to protect yourself from any kind of malware is to remain vigilant and careful. Although it is not easy to spot a keylogger, its activity can be minimized even before it reaches the computer.

1. Set up two-factor authentication

Two-factor authentication (2FA) is an additional and very powerful barrier for intruders who want to gain access to your computer or accounts. It involves going through two or more stages of identity verification before access to a device or online resource is opened.


To overcome 2FA, an attacker would need to have several of your personal devices in hand, which is not possible with a remote hack. Of course, for the user himself, logging in is complicated, so it is recommended to use two-factor authentication only for especially important accounts.

Successful completion of two-factor identity verification requires a one-time password, which will no longer be valid when you log in again. Thus, the introduction of 2FA significantly reduces the likelihood of a keylogger penetrating the system.

2. Use the on-screen or alternative keyboard

Most keyboard spies work with the traditional QWERTY layout. Switching to a different layout, you can strongly reduce the risk that, through a keylogger, hackers will detect something interesting for themselves.

Another alternative - Entering characters from a virtual or on-screen keyboard. It is recommended to resort to the entry into payment systems, access to financial accounts and to enter particularly confidential information.

On most computers, the application for starting the screen keyboard is present by default.

3. Do not regret funds for good antivirus

from keyloggers can protect both free antiviruses, but buying a premium product will give additional advantages: frequent update Anti-virus databases, more efficient analysis tools, etc.

Good antivirus will protect not only from keyloggers, but also from other computer threats.

4. Be careful when following the links

, first of all learn to distinguish reliable sites from fake.

Try not to click on pop-up banners, do not download the attachments in letters from unknown senders, do not accept spontaneous download requests. Remember that a dangerous link may be carefully disguised. Your task is to make sure the resource security is even before clicking.

5. Use the anti-keylogger protective program

against keyloggers There is a separate type of protective programs. They are looking for in the system signs of the presence of spyware, using signature bases of keyloggers, and also stop suspicious activity.

The anti -ylogger is needed on the computer even in order to hide the credentials from potentially present spies.

How to get rid of keyloggers?

Detect the keyboard spy is not easy, but to eliminate it on the contrary - quite easily. There are two options - automatic and manual.

In automatic mode, the keylogger is removed by antivirus. Run the scan and confirm the removal of a malicious program when the antivirus offers such an option.

In manual mode, search for the location of the keylogger will have to be independently. As soon as you find it, drag files to the computer basket and delete forever. The keyboard spy does not allow roots deep into the system, so it is unlikely that you will meet with him again.

While relying on protective programs, it means to make a mistake. Without your assistance - namely, vigilance when working with mail and on the Internet - any antiviruses and firewalls are useless. Just remember that the best treatment is prevention.