Technical Waleed

 A multipartite virus is a type of fast-acting malware that attacks a device's boot sector and executable files simultaneously. Multipartite viruses are often considered more problematic than traditional computer viruses due to their ability to spread in multiple ways. They are considered to be much more destructive than other viruses. Multipartite viruses infect computer systems multiple times, at varying times and in order to eradicate the virus it must be purged from the entire system. Failure to do so can result in the system being repeatedly re-infected if all parts of the virus are not eradicated.  The first reported instance of a multipartite virus was in 1989. Ghostball was the name of this particular virus and it targeted the executable files and boot sectors of the computers it infected. However, Ghostball wasn’t able to reach many victims as the internet was fairly new at the time it started spreading. Now with around half of the global population active online, mul...

 Another way is by installing ransomware on computers, which locks your browser and forces you to pay a ransom to regain access. Signs of browser hijacking Wondering if you’re dealing with a browser hijacker? Keep an eye out for the following signs: Web pages begin loading slower than usual The appearance of one or more toolbars in your web browser that you did not install Your searches get redirected to different websites New tabs keep opening on their own An influx of unwanted pop-up ads Your typical search engine has been replaced It’s also possible that your device won’t show any signs of being infected by a browser hijacker. In this case, the browser hijacker is likely being used to spy on your activity and steal personal data. How to remove a browser hijacker If you observe any of the above signs or have reason to suspect that a browser hijacker has been installed on your device, try: Clearing your system’s DNS cache to sever connections to malicious software programs. Utiliz...

 Lesson Transcript Instructor Lyna Griffin Explore the characteristics of a type of computer virus called a backdoor virus. Investigate what defines a backdoor virus, how one gains access to a computer system, known examples of backdoor viruses, and how to remove one if infected. Table of Contents Backdoor Access Points Computer Backdoors What Is a Backdoor Virus? Backdoor Removal Lesson Summary Show Backdoor Access Points In layman's terms, a backdoor is normally a door that is obscured from the general public. It is not normally used as an active passage in the everyday working of things. In technology, the meaning is almost the same. A backdoor refers to an undisclosed point of access to a program, application, or computer system in which the standard security procedures and authentication processes are bypassed. To unlock this lesson you must be a Study.com Member. Create your account Video Quiz Course Video Only 31K views Computer Backdoors This secret backdoor access is somet...

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. A simple way to answer the question "what is Trojan" is it is a type of malware that typically gets hidden as an attachment in an email or a free-to-download file, then transfers onto the user’s device. Once downloaded, the malicious code will execute the task the attacker designed it for, such as gain backdoor access to corporate systems, spy on users’ online activity, or steal sensitive data. Indications of a Trojan being active on a device include unusual activity such as computer settings being changed unexpectedly. History Of The Trojan Horse user’s device. Once downloaded, the malicious code will execute the task the attacker designed it for, such as gain backdoor access to corporate s...

 Phishing attacks explained Phishing is one of the oldest forms of email attack, but it’s still prevalent in organizations of all sizes. It happens when fraudsters spam users online with emails; these emails sometimes promise prizes or threaten an account suspension, for example, then ask them to click on a link or go to a site to sort things out. Instead of winning a gift or reactivating that frozen credit card, users instead get their identities stolen or their computers infected with viruses.Mimecast Logo What Is Phishing? Phishing is one of the oldest forms of email attack, but it’s still prevalent in organizations of all sizes. Start Threat Scan WHAT IS PHISHING Home Content What Is Phishing Overview Phishing attacks explained Phishing is one of the oldest forms of email attack, but it’s still prevalent in organizations of all sizes. It happens when fraudsters spam users online with emails; these emails sometimes promise prizes or threaten an account suspension, for example, ...

What is a RAT (remote access Trojan)? A RAT (remote access Trojan) is malware an attacker uses to gain full administrative privileges and remote control of a target computer. RATs are often downloaded along with seemingly legitimate user-requested programs -- such as video games -- or are sent to their target as an email attachment via a phishing email. Once the host system is compromised, intruders use a backdoor to control the host, or they may distribute RATs to other vulnerable computers and establish a botnet. Belonging to the family of Trojan horse viruses, RATs are specifically designed to disguise themselves as legitimate content. How does a remote access Trojan work? A RAT is typically deployed as a malicious payload using exploit kits, such as Metasploit. Once installed, the RAT gets connected to the command-and-control server, which the hackers control. The hackers achieve this connection by compromising an open TCP port on the target device. A RAT can also be installed thro...