With so many download links online, it’s hard to know which ones you can actually trust.
Just one wrong click could install malware, adware, or data-stealing trojans.
Here’s how to check if a downloaded file is legit or fake — before it’s too late.
✅ 1. Verify the source
Ask yourself:
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Did I download this from the official website?
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Is the domain correct (e.g.,
vlc.comvsvlc-mediafree.xyz)? -
Was the link shared from a trustworthy source?
✅ If it came from a sketchy forum or URL shortener, hit the brakes.
✅ 2. Check the digital signature
On Windows:
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Right-click the file → Properties → Digital Signatures
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A real app should show a verified publisher (e.g., “Microsoft”, “Google LLC”)
No signature or Unknown Publisher = proceed with caution.
✅ 3. Scan the file before opening
Use:
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VirusTotal (www.virustotal.com) – Upload the file and scan with 70+ antivirus engines
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Your installed antivirus – Right-click → Scan
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Cloud-based scanners (e.g., Kaspersky, ESET)
✅ Even if the file name looks perfect, scan it anyway.
✅ 4. Look at file size and extension
Red flags:
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Unusual size for the app type (e.g., a “browser” installer that’s 300 KB)
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Hidden double extensions (e.g.,
setup.pdf.exe) -
Files from ZIPs that immediately run after extraction
✅ 5. Check behavior after launch
Genuine apps:
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Ask permission
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Show installer windows
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Provide version info and source
Fake files:
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Run silently
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Show fake error messages
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Open pop-ups or unknown sites
If something feels off, close it and scan again.
Key points to remember
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Only download from verified developer websites
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Use digital signature and VirusTotal to confirm legitimacy
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Avoid apps with odd sizes, extensions, or behaviors
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Fake files can look perfect — always check before clicking
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When in doubt, delete the file and re-download from a known source