a few days ago we had a spike in visits from one location in the US and since then our website has all kind of issues, overwhelming our low-tech team in our small office. loading time suddenly takes 2-3 times as much and sometimes the page doesn't load at all, a slider on the homepage doesn't work anymore, our blog site has disappeared from view entirely, the list goes on and on.
in short, i believe someone attacked our website and we now have crippling stuff on it, but stuff that we can neither identify nor fix with our limited knowledge.
does anyone know a company or expert who we can engage to look at our website, fix everything and maybe also prevent future attacks? any pointers are very welcome