yun2345

Q: Remote access

Hi everyone. I am currently using a Macbook pro and recently I suspect that someone has been accessing my macbook remotely as I saw my screens sometimes change on its own. My "Sharing" tab settings were all set to disabled, but my firewall was not on at that time.

 

So my question is:

 

- Are people still able to remotely access my macbook pro with a 3rd party app/program even though my "Sharing" settings are all set to disabled? I am worried because my firewall was disabled at that time.

 

Thank you so much for your help.

Posted on Jul 15, 2016 6:08 AM

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Q: Remote access

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  • Helpful answers

  • by Linc Davis,Helpful

    Linc Davis Linc Davis Jul 15, 2016 9:34 AM in response to yun2345
    Level 10 (208,037 points)
    Applications
    Jul 15, 2016 9:34 AM in response to yun2345

    Are people still able to remotely access my macbook pro with a 3rd party app/program even though my "Sharing" settings are all set to disabled?

    If you've installed such a program (e.g. "Hamachi"), yes.

  • by yun2345,

    yun2345 yun2345 Jul 15, 2016 8:19 AM in response to Linc Davis
    Level 1 (4 points)
    Notebooks
    Jul 15, 2016 8:19 AM in response to Linc Davis

    I checked my applications list, there are no new or unknown apps installed, is there a way for anyone to install those programs on my macbook secretly? I suspect someone is controlling my macbook remotely.

  • by appreciate,

    appreciate appreciate Jul 15, 2016 8:42 AM in response to yun2345
    Level 4 (1,276 points)
    Mac OS X
    Jul 15, 2016 8:42 AM in response to yun2345

    If you have disabled screen sharing , remote sharing ...all settings it is practically impossible to access the system .

    And regarding the screen changes itself you must have set screen saver timings .

  • by yun2345,

    yun2345 yun2345 Jul 15, 2016 8:46 AM in response to appreciate
    Level 1 (4 points)
    Notebooks
    Jul 15, 2016 8:46 AM in response to appreciate

    Thank you so much for your response. So if anyone installs any 3rd party remote access apps/programs on my macbook, the program would also need me to enable the screen sharing, remote sharing etc in my setting tabs right?

  • by appreciate,

    appreciate appreciate Jul 15, 2016 8:55 AM in response to yun2345
    Level 4 (1,276 points)
    Mac OS X
    Jul 15, 2016 8:55 AM in response to yun2345

    If you give permissions to third party apps  to remotely access your system it is possible & enable all  the settings otherwise noway .

    By the way who will install third party apps as you are the administrator no one can install in your system .

  • by yun2345,

    yun2345 yun2345 Jul 15, 2016 9:09 AM in response to appreciate
    Level 1 (4 points)
    Notebooks
    Jul 15, 2016 9:09 AM in response to appreciate

    Because I left my macbook unattended in public several times and I didn't lock it So now I am worried that someone might have hacked into my macbook because I have sensitive information like my credit card details/passwords etc on it. All I remember is that I always keep the sharings settings all disabled at all times and when I noticed the screen changed, they were still disabled. So I was wondering if any 3rd party remote access programs can still access my macbook without the sharing settings enabled?

  • by appreciate,Helpful

    appreciate appreciate Jul 15, 2016 9:33 AM in response to yun2345
    Level 4 (1,276 points)
    Mac OS X
    Jul 15, 2016 9:33 AM in response to yun2345

    Passwords are encrypted and you can change it multiple times ( may be username , webmail , file vault key, firmware password etc) , so be alert & don't leave your system at public place .

    An apple article is there to create strong passwords : Choosing good passwords in Mac OS X - Apple Support

  • by Linc Davis,

    Linc Davis Linc Davis Jul 15, 2016 10:11 AM in response to yun2345
    Level 10 (208,037 points)
    Applications
    Jul 15, 2016 10:11 AM in response to yun2345

    1. This procedure is a diagnostic test. It changes nothing, for better or worse, and therefore will not, in itself, solve the problem. But with the aid of the test results, the solution may take a few minutes, instead of hours or days.

    The test works on OS X 10.8 ("Mountain Lion") and later. I don't recommend running it on older versions of OS X. It will do no harm, but it won't do much good either.

    Don't be put off by the complexity of these instructions. The procedure is easy to do right, but it's also easy to do wrong, so I've made the instructions very detailed. You do harder tasks with the computer all the time.

    2. If you don't already have a current backup, please back up all data before doing anything else. The backup is necessary on general principle, not because of anything in the test procedure. Backup is always a must, and when you're having any kind of trouble with the computer, you may be at higher than usual risk of losing data, whether you follow these instructions or not.

    There are ways to back up a computer that isn't fully functional. Ask if you need guidance.

    3. Below are instructions to run a UNIX shell script, a type of program. As I wrote above, it changes nothing. It doesn't send or receive any data on the network. All it does is to generate a human-readable report on the state of the computer. That report goes nowhere unless you choose to share it. If you prefer, you can act on it yourself without disclosing the contents to me or anyone else.

    You should be wondering whether you can believe me, and whether it's safe to run a program at the behest of a stranger. In general, no, it's not safe and I don't encourage it.

    In this case, however, there are ways for you to decide whether the program is safe without having to trust me. First, you can read it. Unlike an application that you download and click to run, it's transparent, so anyone who understands the code can verify what it does.

    You may not be able to understand the script yourself. But variations of it have been posted on this website many times over a period of years. Any one of the millions of registered users could have read the script and raised the alarm if it was harmful. Then I would not be here now and you would not be reading this message. See, for example, this discussion.

    Nevertheless, if you can't satisfy yourself that these instructions are safe, don't follow them. Ask for other options.

    4. Here's a general summary of what you need to do, if you choose to proceed:

    ☞ Copy the text of a particular web page (not this one) to the Clipboard.

    ☞ Paste into the window of another application.

    ☞ Wait for the test to run. It usually takes a few minutes.

    ☞ Paste the results, which will have been copied automatically, back into a reply on this page.

    These are not specific instructions; just an overview. The details are in parts 7 and 8 of this comment. The sequence is: copy, paste, wait, paste again. You don't need to copy a second time.

    5. Try to test under conditions that reproduce the problem, as far as possible. For example, if the computer is intermittently slow, run the test during a slowdown.

    You may have started up in safe mode. If the system is now in safe mode and works well enough in normal mode to run the test, restart as usual before running it. If you can only test in safe mode, do that.

    6. If you have more than one user, and only one user is affected by the problem,, and the affected user is not an administrator, then please run the test twice: once while logged in as the affected user, and once as an administrator. The results may be different. The user that is created automatically on a new computer when you start it for the first time is an administrator. If you can't log in as an administrator, test as the affected user. Most personal Macs have only one user, and in that case this section doesn’t apply. Don't log in as root.

    7. Load this linked web page (on the website "GitHub") in Safari. Press the key combination command-A to select all the text, then copy it to the Clipboard by pressing command-C.

    8. Launch the built-in Terminal application in any one of the following ways:

    ☞ Enter the first few letters of its name ("Terminal") into a Spotlight search. Select it in the results (it should be at the top.)

    ☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

    ☞ Open LaunchPad and start typing the name.

    Click anywhere in the Terminal window to activate it. Paste from the Clipboard into the window by pressing command-V, then press return. The text you pasted should vanish immediately.

    9. If you're logged in as an administrator, you'll be prompted for your login password. Nothing will be displayed when you type it. You will not see the usual dots in place of typed characters. Make sure caps lock is off. Type carefully and then press return. You may get a one-time warning to be careful. If you make three failed attempts to enter the password, the test will run anyway, but it will produce less information. If you don't know the password, or if you prefer not to enter it, just press return three times at the password prompt. Again, the script will still run.

    If the test is taking much longer than usual to run because the computer is very slow, you might be prompted for your password a second time. The authorization that you grant by entering it expires automatically after five minutes.

    If you're not logged in as an administrator, you won't be prompted for a password. The test will still run. It just won't do anything that requires administrator privileges.

    10. The test may take a few minutes to run, depending on how many files you have and the speed of the computer. A computer that's abnormally slow may take longer to run the test. While it's running, a series of lines will appear in the Terminal window like this:

        Test started
            Part 1 of 4 done at: … sec
            …
            Part 4 of 4 done at: … sec
        The test results are on the Clipboard.
        Please close this window.

    The intervals between parts won't be exactly equal, but they give a rough indication of progress.

    Wait for the final message "Please close this window" to appear—again, usually within a few minutes. If you don't see that message within about 30 minutes, the test probably won't complete in a reasonable time. In that case, press the key combination control-C or command-period to stop it. Then go to the next step. You'll have incomplete results, but still something.

    In order to get results, the test must either be allowed to complete or else manually stopped as above. If you close the Terminal window while the test is still running, the partial results won't be saved.

    11. When the test is complete, or if you stopped it manually, quit Terminal. The results will have been saved to the Clipboard automatically. They are not shown in the Terminal window. Please don't copy anything from there. All you have to do is start a reply to this comment and then paste by pressing command-V again.

    At the top of the results, there will be a line that begins with the words "Start time." If you don't see that, but instead see a mass of gibberish, you didn't wait for the "close this window" message. Please wait for it and try again.

    If any private information, such as your name or email address, appears in the results, anonymize it before posting. Usually that won't be necessary.

    12. When you post the results, you might see an error message on the web page: "You have included content in your post that is not permitted," or "The message contains invalid characters." That's a bug in the software that runs this website. Please post the test results on Pastebin, then post a link here to the page you created.

    If you have an account on Pastebin, please don't select Private from the Paste Exposure menu on the page, because then no one but you will be able to see it.

    13. When you're done with the test, it's gone. There is nothing to uninstall or clean up.

    14. This is a public forum, and others may give you advice based on the results of the test. They speak for themselves, not for me. The test itself is harmless, but whatever else you do may not be. For others who choose to run it, I don't recommend that you post the test results on this website unless I asked you to.

    15. The linked UNIX shell script bears a notice of copyright. Readers of ASC may copy it for their own personal use. Neither the whole nor any part may be redistributed.