How to detect Trojan virus and infected drivers on iMac running macOS Catalina 10.15.7?

How do I know if my iMac, running on macOSCatalina v 10.15.7, is infected with the Trojan virus and/or if any of the drivers are infected?


[Re-Titled by Moderator]

Original Title: Possible Driver Corruptions

Posted on Jan 15, 2026 10:10 AM

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Question marked as Top-ranking reply

Posted on Jan 15, 2026 10:21 AM

Trojans and viruses are two radically different things.


There are no known viruses in the wild that can infect macOS.


A trojan is a malicious application that masquerades as a useful program to con you into installing it.


Have you installed any apps from sources other then the App Store or those directly downloaded from a trusted developer?


Are you experiencing any symptoms that make you question whether you have something malicious installed?


Download etrecheck and post the report it generates here. It will help us determine what might be wrong.

4 replies
Question marked as Top-ranking reply

Jan 15, 2026 10:21 AM in response to swittwer

Trojans and viruses are two radically different things.


There are no known viruses in the wild that can infect macOS.


A trojan is a malicious application that masquerades as a useful program to con you into installing it.


Have you installed any apps from sources other then the App Store or those directly downloaded from a trusted developer?


Are you experiencing any symptoms that make you question whether you have something malicious installed?


Download etrecheck and post the report it generates here. It will help us determine what might be wrong.

Jan 15, 2026 4:05 PM in response to swittwer

Rather than starting with a conclusion, I’d prefer some information around the situation, issues and symptoms.


What are the “possible driver corruptions” reportedly being encountered?


Any diagnostics or error messages?


Which iMac model year?


HDD or SSD or Fusion?


Are current and complete backups available? If not, go get those backups now.


But… The “trojan virus” phrasing common in advertisements; in various ads, pop-ups, and probably also text and email. Probably also in some sketchy add-on security apps.


In many if not most cases, mention of ”trojan virus” is probably an advertisement: Virus Warning! What to do! - Apple Community


Lots of scams around, too: Scam Pop-ups, Scam Viruses, Scam Receipts… - Apple Community

Jan 15, 2026 3:28 PM in response to Servant of Cats

Servant of Cats wrote:

Re: “Trojans and viruses are two radically different things.”

”Trojan virus,” is, however, a common phrase in “phishing” messages and e-mails sent by scammers.

True, but that doesn't negate the fact that there is no such thing as a "trojan virus".


I mean, can you imagine... trying to download a virus and getting a solitaire game instead?


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How to detect Trojan virus and infected drivers on iMac running macOS Catalina 10.15.7?

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