Many Twitter and Facebook users would like to see who have visited their profile. That is not possible. If you see a post like this – even if it comes from a user you know – be careful:
It is a scam. The attackers want you to install a Twitter app that can:
- Read Tweets from your timeline.
- See who you follow, and follow new people.
- Update your profile.
- Post Tweets for you.
If you install the app, your Twitter will start posting the same link to your followers. Next step could include posting or retweeting spam, advertising etc.
Do not install fishy Twitter or Facebook apps. If you already did, go to settings -> apps, locate the malicious application and hit Revoke access. You can also delete any suspicious tweet the app has already posted from your account.