FrostWire, as a stand-alone application, is 100% safe to use. FrostWire itself will not install any viruses, adware, malware or spyware. But is there a way you can get your computer in trouble while using FrostWire? Sure, in a similar way you can while using any application that connects to the internet, like your browser, for example.
FrostWire connects to other computers & online servers to find the content you are looking for. FrostWire does not itself create, host or control the content it finds on the internet - the same way internet browsers do not create, host, or control the websites & files you view and download through them. There are some safeguards in place to recognize and prevent malicious content from showing up in the search results, but none are perfect. Before you download a file:
1) Check if the file size makes sense for the content type you wish to download
2) Check the Source link to see file comments other users have left on the hosting website
and most importantly, if you are a Windows user and do anything online, always
3) Make sure you have an up-to-date anti-virus software installed and you check any file you download before opening it.
4) We highly recommend using VPN service if you don't want anybody spying on what you search for and download
Has your antivirus marked it as a virus or trojan? See here.