Well, they are viruses or don't work. If you know one plz shoot me the link.
Force ops exist, just don't download them from some random link on a youtube video if you don't like malware.
This is what you CAN do. You can check port 21 or 22 of the server. If either of them are connectable, then you can try something neat. Port 21 and 22 are the FTP and SSH ports. What you can do is crack these through brute force or some other method, then you pretty much can edit what is on the console. You can change the ops list and add your IGN then tell the owner to restart the server for some god damn reason. You should be opped. I don't have any FTP or SSH crackers as of the moment.
With passwords being up to 96 characters long(at least on my server it is) that method is virtually impossible. Maybe if the owners are retards though, it might be possible.
Dude force op dont exist dont be dumb.
Force Ops do exist its a software that is basically phising it is illegal. It works by some one filling out a form and putting in their login details and they emails password ect then their info will be emailed to you it can work just study some VB codes
Force OPs exist. Working ones. Look at Ohorichards' post.