Do you have a Venue 8 with Windows or Android? You may get other opinions, but I would say that you do need an anti-malware on your tablet. ESET has an excellent one for Windows. If you are using Android. ESET has one for that as well, but Malwarebytes has a free anti-malware for Android.
Windows Insider MVP 2016 -
Microsoft MVP - Consumer Security 2006-2016
Social Media and Community Professional