Email Risks & Trojan Horses
Email is a convenient method of communication, but it also brings risks. Viruses, email scams and Trojan horses can cause problems for email users. Protecting your computer and the information it contains is a top priority for any computer user. Up-to-date anti-virus and anti-malware software is a must, along with common sense.
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Email Viruses
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Some viruses spread through email messages. When your computer becomes infected, the virus will automatically send an email message containing copies of the virus to everyone in your contact list or phone book. Other viruses attach themselves to the signature file in your email client, so every time you send an email, you send a copy of the virus. Some antivirus programs scan incoming and outgoing emails for viruses.
Email Scams
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One type of email scam is known as phishing. The scammer will send an email that pretends to be from a company that the victim does business with, such as a bank or popular website. The emails typically contain some kind of notice for the victim to log into their account, and prompts them to click on a link. Instead of taking the victim to the correct website, it redirects their web browser to a fake website where their login name and password are stored. Then the scammer logs into the victim's real account and steals money or uses it for other illegal purposes.
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Trojan Horses
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Trojan horses are often referred to as Trojans. Trojans are much like viruses, except they don't spread on their own. Like the original Trojan horse of Greek legend, they pretend to be a file the victim wants. When the file is opened, the payload is triggered. This might include installing malicious software on the victim's machine, opening ports that allow the creator to control the infected computer or stealing information. Most anti-virus software is also designed to protect against Trojans.
Prevention
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Update your anti-virus and anti-malware software frequently, and set them so they are scanning your computer at all times. If you receive an email with an attachment, don't open the attachment unless you're expecting it, even if it's from someone you know. If you receive an email from a company you do business with that wants you to log in, never click on the link in the email. The address in an email can be disguised, so open your web browser and type the page address yourself.
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References
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