Try Malwarebytes and see if that helps.

for more info on your tab visit the forum dedicated to helping it

Galaxy Tab 10.1

 

Looks like pop-up scareware ads. Did you install a free/adware app, game or wallpaper before it started happening? - or possibly something was updated that included this stuff.

There's plenty of information in our forum stickies about it, and what you can do about it.
http://androidforums.com/android-ap...s-unwanted-shortcuts-browsers-redirected.html

http://androidforums.com/android-ap...explained-security-tips-avoiding-malware.html

If you can't identify what caused it, a factory reset should clear it, backup anything important first.

 

I moved this thread from Android Lounge to the forum dedicated to discussing this tablet. This is where you will find the highest concentration of users of this tablet.

... Thom

 

Check your Play Store to see what were the last few apps that were installed. Open Play, then choose My Apps from the pop-out on the left. Choose All to see all the apps that have been installed. These are typically listed in the order they were installed (newest on the top). See if anything that was installed recently looks 'suspicious'. Try removing some of the apps that were installed recently and see if that makes a difference. If you do this one at a time you might be able to isolate the offending app so you can reinstall the others. What you are describing sounds a lot like a scareware app, not a true virus or trojan.

The battery loss you are describing certainly isn't normal. It's not uncommon for a scareware app to run all the time in the background so it can monitor your activity to pop up these scary messages. This would cause a lot of battery loss.

Good luck finding the offending app.