🔸 𝟭. 𝗦𝗲𝗰𝘂𝗿𝗲 𝗣𝗮𝘀𝘀𝘄𝗼𝗿𝗱 𝗦𝘁𝗼𝗿𝗮𝗴𝗲 (𝗕𝗮𝗻𝗸𝗶𝗻𝗴 & 𝗘𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲𝘀)

📌 Scenario: A bank wants to store customer passwords securely to prevent breaches.

🔹 Solution: Instead of storing plaintext passwords, the bank uses bcrypt or Argon2 to hash and salt passwords before storing them. This prevents attackers from retrieving passwords even if they gain database access.

✅ Impact: Even if hackers steal the database, brute-forcing bcrypt-hashed passwords is extremely difficult.

🔸 𝟮. 𝗗𝗮𝘁𝗮 𝗜𝗻𝘁𝗲𝗴𝗿𝗶𝘁𝘆 𝗶𝗻 𝗖𝗹𝗼𝘂𝗱 𝗦𝘁𝗼𝗿𝗮𝗴𝗲 (𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 & 𝗜𝗧)

📌 Scenario: A hospital stores patient records in the cloud and needs to ensure they are not tampered with.

🔹 Solution: Before uploading records, the hospital hashes each file using SHA-256 and stores the hash separately.

✅ Impact: Ensures that no unauthorized modifications have occurred in sensitive data.

🔸 𝟯. 𝗗𝗶𝗴𝗶𝘁𝗮𝗹 𝗦𝗶𝗴𝗻𝗮𝘁𝘂𝗿𝗲𝘀 𝗳𝗼𝗿 𝗦𝗲𝗰𝘂𝗿𝗲 𝗧𝗿𝗮𝗻𝘀𝗮𝗰𝘁𝗶𝗼𝗻𝘀 (𝗘-𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲 & 𝗕𝗮𝗻𝗸𝗶𝗻𝗴)

📌 Scenario: A financial institution wants to verify the authenticity of digital transactions and contracts.

🔹 Solution: The company uses SHA-256 + RSA digital signatures to validate transactions.

✅ Impact: Prevents unauthorized transactions and fraud.

🔸 𝟰. 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 & 𝗖𝗿𝘆𝗽𝘁𝗼𝗰𝘂𝗿𝗿𝗲𝗻𝗰𝘆 (𝗙𝗶𝗻𝗮𝗻𝗰𝗲 & 𝗦𝘂𝗽𝗽𝗹𝘆 𝗖𝗵𝗮𝗶𝗻)

📌 Scenario: Bitcoin uses SHA-256 to create a secure, immutable ledger for financial transactions.

🔹 Solution: Each transaction is hashed and linked to the previous transaction in a blockchain, ensuring tamper-proof financial records.

✅ Impact: Ensures financial transactions cannot be altered or faked.

🔸 𝟱. 𝗔𝗻𝘁𝗶-𝗧𝗮𝗺𝗽𝗲𝗿𝗶𝗻𝗴 𝗶𝗻 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗨𝗽𝗱𝗮𝘁𝗲𝘀 (𝗧𝗲𝗰𝗵 & 𝗜𝗼𝗧)

📌 Scenario: A software company releases security patches and wants to prevent malware-infected updates.

🔹 Solution: The company generates a SHA-256 checksum for each software update. Users can verify the checksum before installing to ensure the update is legitimate.

✅ Impact: Protects users from downloading corrupted or malicious software.

🔸 𝟲. 𝗦𝗲𝗰𝘂𝗿𝗶𝗻𝗴 𝗟𝗼𝗴𝘀 𝗶𝗻 𝗖𝘆𝗯𝗲𝗿𝘀𝗲𝗰𝘂𝗿𝗶𝘁𝘆

📌 Scenario: A cybersecurity team monitors logs for suspicious activities but needs to ensure logs are not altered by hackers.

🔹 Solution: The team hashes log entries and timestamps them to prevent tampering. If a hacker modifies a log, the hash will not match, exposing the breach.

✅ Impact: Maintains the integrity of security logs

🔹 Conclusion

Industries use hashing algorithms to:

✅ Protect passwords (bcrypt, Argon2)

✅ Ensure file integrity (SHA-256)

✅ Secure transactions (SHA-256 + RSA)

✅ Power blockchain (SHA-256 in Bitcoin)

✅ Verify software updates (Checksum validation)

✅ Maintain secure logs (Hashed timestamps)

#Hashing #Industries