Furthermore, legitimate warnings will never ask a user to call a phone number to resolve the issue. If a pop-up claims that the computer is "locked" or "infected" and provides a phone number, it is almost certainly a scam. Another telltale sign is the language used; fake pop-ups often contain grammatical errors, awkward phrasing, or excessive use of capitalization that professional software companies would avoid.
Scammers use "scareware" tactics to create a sense of urgency. Look for these red flags:
Scams often try to trap your mouse cursor or go full-screen so you can't close the window. Signs of a Legitimate Detection: trojan virus detected pop up
[Current Date] Subject: Cybersecurity Threat Analysis – Social Engineering Scam Classification: Social Engineering / Scareware / Malvertising
Fake Viruses: How Do You Know If a Virus Alert Is Real? - Avast Furthermore, legitimate warnings will never ask a user
(A full-screen browser window with a red background, flashing “WARNING” text, a fake progress bar showing “System Scan 23% – Trojan Detected,” and a toll-free number in bold.)
The warning appears as a tab or pop-up within Google Chrome, Safari, or Microsoft Edge, rather than as a separate system window. Scammers use "scareware" tactics to create a sense
Look for spelling mistakes, unprofessional design, or incorrect brand logos (e.g., "Avasst" instead of "Avast").
Legitimate security software will never ask you to call a "toll-free tech support" number or pay via gift cards or crypto to "clean" your system.
Because Trojans are so dangerous, scammers use the name to trigger an emotional, panicked response. How to Prevent Future Pop-Ups