Checksum 101: What is SHA-256 & how to verify in PowerShell

SHA-256 is a hash (digital fingerprint) of a file. If even 1 byte changes, the hash changes - perfect for confirming a download wasn’t tampered with.

✅ Verify a file (SHA-256)
1) Open PowerShell
2) Run:
Get-FileHash -Algorithm SHA256 "C:\Path\file.iso"
3) Compare the Hash value with the official SHA-256 from the publisher.

📌 Tips
- Hash must match exactly (no extra spaces)
- Re-download if it doesn’t match

#Windows #PowerShell #SHA256 #Checksum #CyberSecurity

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