# Issue: Kaspersky thinks librepcb is a troyan **URL:** \ **Category:** Help\ **Created:** [August 14, 2019, 9:14pm UTC](https://librepcb.discourse.group/t/issue-kaspersky-thinks-librepcb-is-a-troyan/125 "2019-08-14T21:14:57Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Tweety](https://avatars.discourse-cdn.com/v4/letter/t/51bf81/32.png) [@Tweety](https://librepcb.discourse.group/u/Tweety)\ **Post date:** [August 14, 2019, 9:14pm UTC](https://librepcb.discourse.group/t/issue-kaspersky-thinks-librepcb-is-a-troyan/125/1 "2019-08-14T21:14:58Z")
Hi, From time to time (about every 5th - 10th time) when I press the icon “save project” kaspersky internet security pops up with the comment that he has found the activity of LibrePCB acting like a “Troyan.Win32.Generic”, he closes LibrePCB and tells me he is going to delete the program after reboot. The annoying part of it is, that I have no other option. After the reboot the file librepcb.exe is gone Fortunately the project seems to be saved. I was not able yet to trace down when exactly this happens and what could make Kaspersky interact the wrong way, since it happens randomly. It happend till now, if I remember correctly, only in the pcb-tool. Has anyone other encountered this issue? Does LibrePCB send some informations to “home”? Thanks DJ ---
**Author:** ![ubruhin](https://avatars.discourse-cdn.com/v4/letter/u/c89c15/32.png) [@ubruhin](https://librepcb.discourse.group/u/ubruhin)\ **Post date:** [August 15, 2019, 8:52pm UTC](https://librepcb.discourse.group/t/issue-kaspersky-thinks-librepcb-is-a-troyan/125/2 "2019-08-15T20:52:27Z")
Hi, > [@Tweety](#): > > From time to time (about every 5th - 10th time) when I press the icon “save project” kaspersky internet security pops up with the comment that he has found the activity of LibrePCB acting like a “Troyan.Win32.Generic”, he closes LibrePCB and tells me he is going to delete the program after reboot. Oh, that’s bad 😱 Would be good to know what behavior of LibrePCB triggers this reaction of Kaspersky. Do you know if there is a way to get some detailed information from Kaspersky? > [@Tweety](#): > > Has anyone other encountered this issue? After just a few minutes using LibrePCB on a computer with Kaspersky, I had no issues. But most of the time I use LibrePCB on Linux, i.e. without Kaspersky. > [@Tweety](#): > > Does LibrePCB send some informations to “home”? No, the only Internet communication is to fetch the list of libraries when opening the library manager. But that’s rather a “normal download” than “talking to home”. ---
**Author:** ![brim2full](https://avatars.discourse-cdn.com/v4/letter/b/f17d59/32.png) [@brim2full](https://librepcb.discourse.group/u/brim2full)\ **Post date:** [December 28, 2020, 4:39pm UTC](https://librepcb.discourse.group/t/issue-kaspersky-thinks-librepcb-is-a-troyan/125/3 "2020-12-28T16:39:19Z")
Yep. But with ZoneAlarm Antivirus, it deleted librapcb. Annoyed me so much I turned ZoneAlarm Antivirus off since I could not identify how to tell it it was wrong. Now it keeps badgering me to turn it on and update. ---
**Author:** ![w0l](https://avatars.discourse-cdn.com/v4/letter/w/a88e4f/32.png) [@w0l](https://librepcb.discourse.group/u/w0l)\ **Post date:** [August 25, 2025, 9:11am UTC](https://librepcb.discourse.group/t/issue-kaspersky-thinks-librepcb-is-a-troyan/125/4 "2025-08-25T09:11:35Z")
Six years later this is still happening. ---
**Author:** ![ubruhin](https://avatars.discourse-cdn.com/v4/letter/u/c89c15/32.png) [@ubruhin](https://librepcb.discourse.group/u/ubruhin)\ **Post date:** [August 25, 2025, 10:57am UTC](https://librepcb.discourse.group/t/issue-kaspersky-thinks-librepcb-is-a-troyan/125/5 "2025-08-25T10:57:09Z")
Sad to hear that :-/ Note that we are working on code-signing for upcoming releases so at least Windows should not complain anymore about “unverified publisher” and who knows, maybe it also helps antivirus to realize librepcb is not harmful at all. But if anyone has more information _why_ those antivirus complain about librepcb, please let me know.