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You're reading from  A CISO Guide to Cyber Resilience

Product typeBook
Published inApr 2024
PublisherPackt
ISBN-139781835466926
Edition1st Edition
Concepts
Cybersecurity
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Author (1)
Debra Baker
Debra Baker
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Debra Baker

Debra Baker has 30 years of experience in Information Security. As CEO of TrustedCISO, Debra provides strategic cybersecurity CISO Advisory Services. She has an AI first startup aiming to power through the pain of Third Party Vendor Assessment and Compliance. Previously, Debra was CISO at RedSeal where she led the security program successfully getting SOC2 Type 2. Previously, she served as Regulatory Compliance Manager at Cisco. While at Cisco she founded the cryptographic knowledge base, CryptoDoneRight in collaboration with Johns Hopkins University. Debra was named one of the top 100 Women in Cybersecurity, "Women Know Cyber: 100 Fascinating Females Fighting Cybercrime."
Read more about Debra Baker

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Cryptographic hashing

While we are talking about hashing, I wanted to explain what it is and why you want to use it. Ensure your company is using SHA-256 or above. SHA-1 has been deprecated due to a SHA-1 collision. A SHA-1 collision occurs when two distinct pieces of data hash to the same message digest. If an attacker can craft a collision, they can use it to create two different files that share the same SHA-1 hash value1.

1 Stevens , Marc, and Elie Bursztein. Announcing the First Sha1 Collision. Google Online Security Blog, Google, 23 Feb. 2017, security.googleblog.com/2017/02/announcing-first-sha1-collision.html.

Although SHA-1 has been deprecated, hmac-sha-1 is still okay to use since it is a secret keyed hash value. What a hashing algorithm provides is integrity. It doesn’t actually encrypt the data, so you can’t read them. Hashing runs a mathematical function on the document that essentially fingerprints it. If anything in the document changes...

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A CISO Guide to Cyber Resilience
Published in: Apr 2024Publisher: PacktISBN-13: 9781835466926
© 2024 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Debra Baker

Debra Baker has 30 years of experience in Information Security. As CEO of TrustedCISO, Debra provides strategic cybersecurity CISO Advisory Services. She has an AI first startup aiming to power through the pain of Third Party Vendor Assessment and Compliance. Previously, Debra was CISO at RedSeal where she led the security program successfully getting SOC2 Type 2. Previously, she served as Regulatory Compliance Manager at Cisco. While at Cisco she founded the cryptographic knowledge base, CryptoDoneRight in collaboration with Johns Hopkins University. Debra was named one of the top 100 Women in Cybersecurity, "Women Know Cyber: 100 Fascinating Females Fighting Cybercrime."
Read more about Debra Baker

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