Recovering from Viruses, Worms, and Trojan Horses | CISA (2024)

FAQs

What is Trojan horse computer viruses answer text? ›

What is a Trojan Horse Virus? A Trojan Horse Virus is a type of malware that downloads onto a computer disguised as a legitimate program. The delivery method typically sees an attacker use social engineering to hide malicious code within legitimate software to try and gain users' system access with their software.

Malware, or malicious software, is any program or file that's intentionally harmful to a computer, network or server. Types of malware include computer viruses, worms, Trojan horses, ransomware and spyware.

A Worm is a form of malware that replicates itself and can spread to different computers via Network. Trojan Horse is a form of malware that capture some important information about a computer system or a computer network.

A Trojan Horse is a program that uses malicious code masqueraded as a trusted application. The malicious code can be injected on benign applications, masqueraded in e-mail links, or sometimes hidden in JavaScript pages to make furtive attacks against vulnerable internet Browsers.

Installing and using a trusted antivirus solution is also one of the top ways to get rid of trojans. An effective antivirus program searches for valid trust and app behavior, as well as trojan signatures in files in order to detect, isolate and then promptly remove them.

The best way to clean up a Trojan infection is to use Malwarebytes' free trojan scanner, and then consider Malwarebytes Premium for proactive protection against future Trojan infections. Malwarebytes Premium will initiate a scan for Trojans and then remove Trojans so they can't cause further damage.

Turning your computer will stop the virus sure… until you turn the computer back on, when the virus will happily keep doing what it was doing. Unless you are an expert on viruses, you will need to use antivirus software to clear the virus off your system.

A worm is like a computer virus by its design but is a sub-class of a virus or trojan horse. Worms spread from computer to computer, but unlike a virus, it has the capability to travel without attaching to a host program and can run independently.

How to protect your computer from Trojan viruses? ›

To remove a Trojan, a malware infection needs to first be detected. The best way to do this is by regularly scanning your system with an antivirus program. With 'Windows Security', Windows 11 offers a reliable tool to detect and delete Trojans.

Use a legitimate anti-virus software. Do not download any fake software as there are chances it may contain malware. Never click on fake antivirus pop-ups that are generated from websites. Always keep your operating system updated.

Often, closing your browser or deleting a suspicious app should be enough to resolve the problem. And if this doesn't work, you may need to run an antivirus scan to detect and remove the threat. Overall, it's important to use reputable antivirus software to help you avoid malware.

A trojan horse is any type of malware that misleads users of its intent, like a destructive program that appears as a genuine application or software program. Trojan horses are named after the Ancient Greek story of the deceptive trojan horse that took down the city of Troy.

A Trojan horse is not a virus. It is a destructive program that looks as a genuine application. Unlike viruses, Trojan horses do not replicate themselves but they can be just as destructive.

They may seem like a relic from another century, yet they are still active and pose a significant threat. SMS Trojans such as the Android malware Faketoken can work in different ways.

A Virus is a malicious executable code attached to another executable file which can be harmless or can modify or delete data. Trojan Horse is a form of malware that captures some important information about a computer system or a computer network.