shufuni.com; I know funny name but have used it for many years and never had any problems.
youporn.com; also a good site, no viruses and I like that it lets you download videos. Never had a problem with any video I downloaded. But I do run several virus scans on a video I download.
As long as you have a decent anti-virus, with a pop-up blocker, that can also scan everything, that's up to date, as inconstantly updated, you'll be ok. Perhaps stick with some of the sites mentioned above as well. But, even those stites use linkouts to whereever the clips are, so ....., back to computer security, apoligies for a recurring manta on a sunday am, only my second cup.