Browser hijackers are very common nowadays because they provide their handler with the opportunity of taking hold of the targeted Web browser and redirecting it to whatever website they want. Using this strategy they can expose the computer user to websites promoting products and services of multiple kinds and generate a monetary gain for themselves. However, what makes browser hijackers unwanted and potentially threatening is that the websites they promote may not always display good sources of products and services. They can advertise fake updates, useless security tools, overpriced services and so on. Also, some of them can be laced to adware, Possibly Unwanted Programs (PUPs) and even threats.
Another issue caused by browser hijackers such as the one we are talking about right now, Search.lilo.org, is that they will tamper with your browser settings and collect information that will be shared with third parties. When the collected information is used to create advertisements that can be useful to the computer user, there's nothing wrong. However, these third parties can use the collected information to perform harmful actions such as identity theft.
Search.lilo.org can appear on your machine after the download of a new free application or when you access a compromised website or advertisement. To remove Search.lilo.org from an affected machine it is better to use an anti-malware product.