article about online advertisements for further information. The important thing to remember is, that this is possible not due to careless surfing. It works because the human brain operates with contextual sections.
Some just want to make a few bucks by registering a misspelled domain in order to sell it back to the brand owner. One could register www.citybank.com and sell it to www.citibank.com, as this is a common misspelling.
Other unfair practices include redirection to potentially unwanted applications (abbreviated PUA). Your browser will typically show a warning about the state of your computer – telling you it might be infected, your drivers might be out of date or that you have won a million dollars. To give you a practical example: I found this software recommending driver updates for my computer while going through misspelled Wikipedia links (I omit the direct URL for obvious reasons). A click on “Installieren” (region-specific, as I am browsing from Germany), tries to install the software that I do not actually intend to have on my PC. Fortunately, I am one of the lucky people having Avira security products installed. The Web Protection kicks in and saves me from accidentally installing PUA on my PC.
No antimalware solution will ever give you 100% security. They are considered to provide you with something in between base and enhanced detection of malicious software on your PC. Nowadays, those programs also include effective web protection like cloud-based scanning of URLs. Avira offers both traditional antimalware solutions and an unobtrusive browser plugin to protect you against most of it. However, you should never solely rely on software to protect you. It helps a lot to know about the risks. You just might look twice the next time. 😉
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