It would likely be scams, fraud, viruses, that sort of stuff.
The elderly of this generation may not be so fond with technology. They could for example click a load of links saying that their device has a virus (which ironically, may just give them one), or that they could win free stuff by clicking a link; and all this because most elderly of this generation believe that the internet is a safeguarded and casual place to be lurking around, though in reality it has its dangers if you don't know the do's and don'ts.