The FREE Cybersecurity Glossary by Thor Pedersen!

Cipher Feedback (CFB) Mode: A mode of operation for block cipher systems that effectively converts a block cipher into a self-synchronizing stream cipher. In CFB mode, the previous ciphertext block is encrypted, and the output is XORed with the current plaintext block to get the current ciphertext block. As with CBC mode, the chaining mechanism causes the output to be highly sensitive to changes in the input, increasing security by masking patterns in the plaintext.

The CISM (Certified Information Security Manager) is a  highly respected certification in the field of information security management, CISM is the benchmark for individuals overseeing an organization's information security.

Offered by ISACA, it is tailored for those responsible for managing, designing, and overseeing an enterprise's information security.

There are currently over 36,162 open CISM jobs in the US. (More open jobs certified people).
The average salary for CISMs in North America is $152,037 a year, and globally it is $114,483.

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The CISSP is the most in-demand IT/Cybersecurity certification, the CISSP is golden standard.

It is offered by ISC2 and is designed for experienced security practitioners, managers, and executives who want to demonstrate their knowledge across a wide array of security practices and principles.

There are currently over 74,228 open CISSP jobs in the US. (More open jobs certified people).
The average salary for CISSPs in North America is $147,757 a year, and globally it is $119,571.

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CLASSPATH: An environment variable in Java programming that tells the Java Virtual Machine (JVM) and Java technology-based applications where to find class libraries, including user-defined class libraries. This is crucial for the execution of Java applications, as CLASSPATH can be set to point to the directories where related class files are stored.

Cloud backup as a service: A data backup and recovery solution that involves storing data on a remote, cloud-based server. It ensures protection against data loss due to hardware failure, natural disasters, or other unforeseen events. Examples include services like Google Drive, Dropbox, Carbonite, and Mozy.

CMAC (Cipher-based Message Authentication Code): A cryptographic technique for message authentication using a symmetric key block cipher algorithm such as AES. It provides integrity and authenticity for messages or data by producing a fixed-size output, known as a tag or MAC, which is sent along with the message. The receiver then computes the CMAC using the same secret key to verify the integrity of the message. CMAC is resistant to forgery and is widely used in various security protocols and applications.