Kaspersky Internet Security 2018 Deletes Vivaldi Files



  • Good Morning (or whatever)

    Kaspersky internet Security 2018 on my machine is deleting files in the directory C:\Users\Owner\AppData\Local\Vivaldi\User Data\Default\Cache\f_00000x
    which it detects as trojans.

    As it cannot clean the 'infection' it deletes the files - one every time I run the browser.

    I have contacted Kaspersky and am awaiting a resolution, but cannot send them a copy of the offending file as it is deleted before I can intervene.

    I assume that directory is genuine and the 'infection' a false positive.

    Anyone else had this problem ?

    Regards,

    Cheemag


  • Moderator

    @cheemag From all of the problems I have read on various forums caused by Antivirus, I think you're better off removing Kaspersky and relying on Windows Defender.

    False positives are extremely common, and sometimes prevents programs from installing or running at all.



  • @cheemag I don't use kapersky but it's possible that you could add an exception for the affected Vivaldi folder.

    Just be aware that an unwanted program could use such an exception to hide.


  • Moderator

    My Kaspersky Antivirus 2018 does not delete files.

    Does Kaspersky Internet Security 2018 does not have a Quarantine where you restore such file for sending to Kaspersky?


  • Vivaldi Ambassador

    I use Panda Dome, currently the best (AV Test), Cloud based, without problems or false positives
    Includes a VPN service (in the free version 150Mb / day and automatic proxy selection)



  • @cheemag You could try to (if you know what are you doing)

    • Add TEMPORARY exception for that file/folder (so the AV still protect you while "unlock" the files)
    • Take back from the quarantine (if not already removed)
    • Lower AV heuristic sensibility (which tend to show a lot of false positives on higher values)
    • Send/scan the infected(?) file with virustotal or Zemana
    • Submit false positive to Kaspersky (if any)
    • Clear cache folder (should be safe to erase it -- of course you'll lose the cache)
    • Remove the exception again.


  • Just to be sure that this is really a false positive I'd recommend to cross check with another security software. But please make sure before you'll do this that kaspersky isn't running (best uninstall it at least temporary) to not start a security software war on your pc.



  • @cheemag said in Kaspersky Internet Security 2018 Deletes Vivaldi Files:

    ... Kaspersky internet Security 2018 on my machine is deleting files in the directory C:\Users\Owner\AppData\Local\Vivaldi\User Data\Default\Cache\f_00000x which it detects as trojans.

    As it cannot clean the 'infection' it deletes the files - one every time I run the browser.
    ...
    I assume that directory is genuine ...

    The path you listed is essentially correct for Vivaldi, but it should end in a file name (f_00000x in your example), not a directory. So what is probably being deleted by Kas is that f_00000x file. Most likely Kas is actually informing you that it is deleting that file from the *\Cache folder. If you are instead actually seeing a 'f_00000x' folder that contains files that are being deleted by Kas, something is indeed malicious... or at least suspicious.



  • Good Afternoon (or whatever),

    ... removing Kaspersky and relying on Windows Defender.

    Now you are being silly.

    These files were history files, so no great loss there.

    The issue has been fixex, but only in respect of Kaspersky-2018 will quarantine rather than delete.

    Regards

    Cheemag


  • Moderator

    @cheemag said:

    Now you are being silly.

    I have no antivirus installed other than Windows built-in security. I switched to Avast long ago, when AVG started causing issues (that may have been as long ago as Windows XP), then removed Avast as that also caused issues.

    You're the one reporting problems, not me, so who is being silly ?

    I have been running Window this way since installing the free upgrade from Windows 7 to Windows 10.


  • Vivaldi Ambassador

    @pesala said in Kaspersky Internet Security 2018 Deletes Vivaldi Files:

    @cheemag said:

    Now you are being silly.

    I have no antivirus installed other than Windows built-in security. I switched to Avast long ago, when AVG started causing issues (that may have been as long ago as Windows XP), then removed Avast as that also caused issues.

    You're the one reporting problems, not me, so who is being silly ?

    I have been running Window this way since installing the free upgrade from Windows 7 to Windows 10.

    Try this one, no problems, no false positves and better than Avast or AVG
    https://www.pandasecurity.com/homeusers/solutions/free-antivirus/

    Imgur


  • Moderator

    @catweazle Thanks, but why would I install software unless I felt that my system was at risk? My experience tells me that the risk is low.

    I am a naturally cautious person who always locks my back door when I go out and even when sleeping during the day, though my neighbours do neither.

    I did have Malwarebytes installed once, but the scan always came up with zero results so I uninstalled that too. Maybe I will try it again sometime just to check that my system is still clean.

    Edit: I just reinstalled the latest free Malwarebytes and scanned my system. No threats were found.

    I stopped visiting sites like CNET and Softpedia years ago, and I do not use high-risk sites.


  • Vivaldi Ambassador

    @pesala said in Kaspersky Internet Security 2018 Deletes Vivaldi Files:

    @catweazle Thanks, but why would I install software unless I felt that my system was at risk? My experience tells me that the risk is low.

    I am a naturally cautious person who always locks my back door when I go out and even when sleeping during the day, though my neighbours do neither.

    I did have Malwarebytes installed once, but the scan always came up with zero results so I uninstalled that too. Maybe I will try it again sometime just to check that my system is still clean.

    I stopped visiting sites like CNET and Softpedia years ago, and I do not use high-risk sites.

    It is correct, the best antivirus is the common sense and also to download software from its corresponding official pages, or failing that, in sites such as Sourceforge or Github, Filepuma or MajorGeek will still be valid.
    But even so, an AV is essential ,especially with an intensive use of the Internet , since more than 250,000 new viruses appear online and it is easy to become infected despite all the precautions (I know)
    The traditional AV therefore have to download regularly the definitions of the new threats, although this has 2 disadvantages.
    On the one hand with downloads of, by far once a day, or at worst, only in the course of the usual updates (Windows Defender), always go behind new malign codes and therefore have to be limited mainly to a detection heuristic, which invariably leads to a large number of false positives with any program hosted on the system, as is the case in this thread.
    Apart from the disadvantage of having to pull a large database hosted on the disk, which can slow down the system quite a lot.
    This is why the Panda company was the first one to operate its AV based on the cloud several years ago, that is, it receives the new definitions in real time from the same servers, while you browse and only in second place for the heuristic control when you are offline.
    Therefore, it is much more efficient, even against rootkits, apart from having an impact on the performance of the system-
    It also now includes an anonymous VPN (in its free version limited to 150Mb / day and automatic proxy selection), apart from a 'vaccine' for USB and system drives.
    The free version has a banner in its window asking to move to the Pro version, it is not intrusive and in its installation it offers additions, like its Safe Search, which you can discard without problems (you will also find it in the Chrome Store)
    In your configuration you can also deactivate to show you news of security of new threats and of the computer world that shows by omission at times. Thing of free versions that in this is not at all annoying



  • I got no issues with Kaspersky Internet Security 2018 and Vivaldi.

    Well, that is not exactly true. Their Password Manager extension stopped working two weeks ago after an update from Kaspersky Lab.


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