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Old 02-28-2021, 06:16 AM   #1
LMesk
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Exclamation Avira putting TR/Crypt.XPACK.Gen in quarantine

Hi, I juste download the 5.12.0 update of Calibre with the link from the logiciel and my antivirus (Avira) send my a notification saying that he put the file TR/Crypt.XPACK.Gen in quarantine because he recongnize it as a trojan horse. I don't understand, Calibre is a fantastic tool but I trust my antivirus so what is the TR/Crypt.XPACK.Gen file ?
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Old 02-28-2021, 07:59 AM   #2
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TR/Crypt. XPACK. Gen is the generic name for threats detected by Avira and categorized as unknown Trojans
So Avira cannot identify a known threat but it thinks there is one.
Funnily enough Microsoft Defender doesn't find any issue with Calibre V5.12 and I would rather trust that.
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Old 02-28-2021, 08:36 AM   #3
kovidgoyal
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https://manual.calibre-ebook.com/faq...a-virus-trojan
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Old 06-11-2022, 08:54 AM   #4
Dizpo
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Yeah, disabling before installation works, the first time. But then it catches "calibre.exe" and quaranteens it along with all the other associated .exe's. It (Avira Pro) won't allow you to put exceptions on these exe's even if you restore them from quaranteen. In fact, Avira won't let you access the programs even after quaranteen restore. Avira is a massive pain. Only solution is to choose which program you prefer, Avira Antivirus or Calibre. Hmmm...
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Old 06-11-2022, 11:29 AM   #5
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Get rid of Avira.
Use uMatrix, or noScript or uBlockOrigin or similar and block 3rd party scripts in browser.
Block remote content in email.
Don't download programs from dodgy sites, especially "free" versions of pay only programs.
Don't open unexpected attachments in email.
Don't check out random USB stick you found.
If Windows, turn on show file endings and learn which ones can execute (inc scripts).
Turn off scripting in MS Office before opening any 3rd party doc received.
Use alternate to Adobe PDF, don't view PDF in Browser, turn off Scripting in PDF viewer.
Don't open documents in Browser, download them.

AV programs are notorious for false positives and missing new threats. Doing all above works better. On Windows the MS Defender is less bother than any 3rd party.
Only activate AV before adding removable storage (from 3rd party) or downloading an executable, otherwise have it completely disabled.
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Old 06-11-2022, 11:52 AM   #6
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Avira is garbage. Delete it and never look back.

If you run Windows, just use the AV that comes with Windows as it works much better.
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