, as it can save lots of money, not to mention the hassle of having to fix a damaged threat defense computer. Worms: Threat Level – Severe. A computer Worm is a a threat defense type of especially nasty Malware that is a self-replicating computer program, which at one point almost brought the entire Internet to its knees. Unlike a virus, it doesn’t attach itself to an existing program and does not infect computer threat defense files, instead it wrecks havoc on systems as it creates endless copies of itself, with the goal of taking up as much space as possible on the PC and creating program problems. Worms almost always cause harm to the network, if only by threat defense consuming bandwidth, whereas viruses almost always corrupt or modify files on a targeted computer. Internet worms are most prevalent today in the form of email attachments. Two of the worst worms ever were Mydoom and Morris. Worms are usually sent via email by attachments, you should never open an threat defense attachment in your email from an unknown source. Also, when deciding on an anti virus security program it is important to make sure that the email scanner is activated and that the software covers protection, detection and removal features for worms. Spyware: Threat Level – Low to Severe. Spyware is one of the most threat defense common types of Malware and often slows computer performance. Spyware spies on your web browsing activities and comes in forms of keyloggers (where your keystrokes are monitored), recording/sending your web browsing habits to a third party, causing unwanted pop-up adds, hijacking home/search pages and making changes to them, as well as, redirecting browsing results. A Spyware infection can be caught in several ways. One way is by clicking on a bad link from a bad site. Two, through small windows of advertising that pop up during web browsing (pop-ups). Third, there is what is called a drive-by type download and that is where Spyware infects computers without the user noticing, just by visiting a bad web page. Tip: All web browsers allow you to check a “block pop-ups” selection which can be accessed from the browser toolbar under options. Adware: Threat Level: Low to Intermediate. Adware is Advertising Display Software that delivers ads in a manner or context that is unexpected, unsolicited and automatically loaded. Many adware applications also perform tracking functions, and therefore may also be categorized as Tracking Technologies. Adware causes pop-up windows with advertisements in the browser based on the information it collects from the user’s browsing patterns. Sometimes adware may be installed in conjunction with a companion Spyware program. Phishing: Threat Level – Severe. Phishing is a form of Internet fraud that aims at identity theft. It’s purpose is to steal valuable information such as credit cards, social security numbers, user IDs and passwords. A phishing site is a duplicate of a legitimate site and it is created to dupe users into logging in and therefore stealing private information. Many phishing scams are perpetrated via mass emails which alert the customer to some problem with your customer account or some other hook, usually from a bank, or Paypal or some other institution and it lures people into entering their private data by following a link to the phishing site of a real site. The recent IRS rebates spawned a phishing scam, where mass emails were sent with IRS logos informing taxpayers that they are due a rebate check but threat defense they must first follow the IRS link and input their information to receive the rebate. The link, of course, leads to a phishing site where unsuspecting people enter personal information, like social security numbers which are then hijacked by identity thieves. It is important to realize that most reputable companies do not usually send emails soliciting private data. In fact, Paypal explicitly lets its users know that they never solicit customers via email in any way. The IRS has a fraud alert on their homepage advising taxpayers of such phishing scams. If you get threat defense check with the institution that sent the email in some other way. Took for phishing protection. Drive-By Downloads: Threat Level – Low to Severe Drive-By download is where all types of Malware can infect your computer via a visit to a web page. The Malware codes are embedded in these bad sites and looks for users computers to become hosts to attach itself to. It is important to look for threat defense drive-by or real time protection when considering security software. Drive-by or real time protection should be included on the anti virus software that is on the computer. Rootkits: Threat Level – Severe. Rootkits are really bad because they can hide their existence from operating systems and users and cause major destruction. Because Rootkits create stealth program codes that run at a lower level than can be detected with all normal anti virus software and Malware removal threat defense programs, it is crucial to make sure that the security software explicitly protects against rootkits. Cookies: Threat Level – Low. Some cookies are positive and really do not harm to your system in anyway, they simply temporarily store your threat defense log-in information so that you do not have to enter it again when you return to that site. Plus, many sites will not run properly without cookies enabled and so they are a necessary element. And these temporary cookies can be cleared from within your browser at any time you. On the other hand Tracking Cookies are a form of Tracking Technology. Tracking Cookies are used to track the surfing habits of users in order to manage, analyze advertising data, and they may be used with the more malicious intent of monitoring uhttp://www.trendmicro.co.th/th/enterprise/challenges/advance-targeted-attacks/