Microsoft security software detects and removes this family of threats.

This family of threats can allow backdoor access, download files, and use your PC and Internet connection for click fraud and bitcoin and Litecoin mining.

Some Sefnit versions can monitor Internet Explorer or Mozilla Firefox to hijack search results when you use search engines such as Bing, Yahoo!, and Google.

They can be downloaded by other malware, or bundled with other software and downloaded through peer-to-peer file sharing networks.

Find out ways that malware can get on your PC.

Trojan:Win32/Sefnit.AA is a trojan that may monitor Internet Explorer or Mozilla Firefox to hijack the search results for various search engines.

Trojan:Win32/Sefnit.AC is a trojan that may monitor Internet Explorer and Mozilla Firefox to hijack search results from certain engines.

Trojan:Win32/Sefnit.AJ is a trojan that may monitor Internet Explorer or Mozilla Firefox to hijack the search results for various search engines.