I opened a link using the built-in facebook browser yesterday, and pop-ups on the website kept asking me if I wanted to install some anti-virus and they had two options: No thanks and OK. Normally I press the back button because I'm wary of clicking anything, but this time I clicked "Cancel."

I've noticed some weird behavior with my phone freezing this morning and now I'm paranoid. Could have clicking "Cancel" actually installed something? Was the message box option spoofed?

1 Answer 1


Well it's hard to know. Install avast anti-virus from google play and it will show any viruses (if there are any). But that 'Message Box' shouldn't have appeared, so that means either Facebook was hacked or you were using a fake Facebook app/page. Clicking 'No Thanks' on a webpage can't install anything unless you already have a virus on your Android. You should be safe if you were using the genuine Facebook app/page and that Settings>Security>Unknown Sources was unchecked.

  • I was using the genuine facebook app, which now has its own built-in browser for when you click on links in facebook posts. Are you really positive that clicking a pop-up message box can't install anything?
    – eek
    Commented Jan 4, 2015 at 19:21
  • I can also confirm that i have Settings>Security>Unknown Sources unchecked!
    – eek
    Commented Jan 4, 2015 at 19:24
  • The only way anything could be installed is by installing it from the Google play store, A apk (Unknown sources HAS to be enabled, ADB). But there is one way in which something can happen: If you have a application installed on your android, a link can open it and start a action (Such as using loads of RAM). Do you remember what it said in the message box?
    – user86581
    Commented Jan 4, 2015 at 19:32
  • And clicking 'No Thanks' can open a link but definately not install anything
    – user86581
    Commented Jan 4, 2015 at 19:33
  • Finally found it again: "The page at "http://quickscanner.co" says: === Android Warning === Is your Android browser outdated? Tap 'OK' to download the latest now!" And there are two options: Cancel and OK. I clicked Cancel.
    – eek
    Commented Jan 4, 2015 at 19:55

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