The main website was slickbit.net, then slickbit.online, but both are now offline, if you look at the post from 02/07/2020, they are now mentioning a new website which you have to pay to receive the link to, they are now also asking for people's 12 word backup passphrases, which I would imagine is to compromise a set of accounts and rinse them, or worse, use them as proxies.

Originally with slickbit.net, they advised that the website had been hit by a DDOS attack and was now offline, though the site was still live as I was able to access my account on there. They initially offered some free mining power, then told people they had to deposit to unlock withdrawals. Many people, including me, proceeded to do so. We were then told that following the DDOS attack, they would be moving to slickbit.online, and that people had to pay for a "proxy server" to access the new site, or provide their 12 word passcode. I refused to do this as frankly I was unwilling to pay more when the apparent security issue was their fault for not securing the site with cloudflare.

Out of genuine curiosity I paid the small amount to access the new site, only to be told to provide my 12 word code before they would provide access to the new site, as it would "allow them to ensure it was me" which frankly, confirmed the scam in my eyes, as even when I advised them that blockchain themselves tell you never to share your 12 word backup code with anybody.