What is a .BC5B file?
A .BC5B file is a type of file that has been locked by a harmful computer program known as ransomware. This kind of virus is used by people who want to steal money online. They sneak the virus into your computer, and it changes your files, like pictures (.JPG), videos (.WMV), or documents (.DOCX), by scrambling them so you can't open them anymore. The files get a new name ending in .BC5B to show they are locked.
To open these files again, you might think you need a special program, but actually, what you need is to remove the virus from your computer. One way to try to fix the problem is by using a feature called System Restore on your computer. This can sometimes undo the damage by going back to a point in time before the virus infected your computer.
Ransomware works by taking your files "hostage." The criminals behind it then ask you to pay them, often with Bitcoin (a type of digital money), to get your files back. The virus usually gets into your computer through a tricky email that looks like it's sending you an important document. It might ask you to do something (like enabling macros in a .DOC or .DOCX file), which then lets the virus in. Once inside, it starts to lock your files by encrypting them and then tells you about it in a .TXT file, explaining that your files are locked and how you can pay to unlock them.
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