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SQL Slammer, 2003: Regarded as one the fastest spreading worm malware ever, SQL Slammer exploited a vulnerability in Microsoft’s SQL Server software. Once installed, the worm silently goes to work and infects the machine or even entire networks without the user’s knowledge. Once opened, these files could provide a link to a malicious website or automatically download the computer worm. They also can arrive as attachments in emails or direct messages or be installed by removable media.
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Worms can be transmitted via software vulnerabilities. Unlike viruses, however, worm malware can copy itself without any human interaction, and it’s not host-dependent, meaning it does not need to attach itself to a software program to cause damage.
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Worms, similar to malware viruses, are a type of malware that replicates itself. ILOVEYOU virus, 2000: This malware virus impacted millions of computers around the globe and was downloaded by clicking on an attachment called “” and from an email with the subject line “ILOVEYOU.” 2.
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exe files, that stands for “executable” files.įrom there, the virus replicates, spreading copies of itself from computer to computer, to wreak the most havoc.
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They lie dormant until triggered to attack, perhaps by users downloading an email attachment - oftentimes. Viruses are a type of malware that often take the form of a piece of code inserted in an application, program, or system and they’re deployed by victims themselves.Īmong the most common types of malware, viruses are similar to bodily viruses in that they require a host, meaning a device, to live. These are the most common types of malware to recognize: Over time, some malware types have even become hybrids of one another, as they deploy similar malware attack methods, such as by harnessing logic bombs, meaning pre-set attacks that are sometimes triggered by victims themselves by leveraging phishing and social engineering tactics to deliver malware directly to victims or via mobile malware, meaning malware that targets mobile devices. What are the different types of malware?Įven as there was a 39 percent decrease in malware worldwide in 2020, malware types continue to evolve. This is why it’s not only important to understand not only what does malware mean but also what each type of malware means - and what it means for targets. Of course, the degree of that harm depends on the types of malware you’re dealing with. To define malware point blank, it’s any piece of software created with the intent to cause harm. A contraction of the words malicious software, malware is software that cyberattackers develop to gain access or cause damage to a computer or network, usually without their victim’s knowledge.