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Symmetric block modes
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Symmetric block algorithms have limitations depending on which kind of cipher is used. This episode explores the different block modes.
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Cryptographic methods
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This episode introduces various methods used to protect the critical keys in cryptography that keep communication secure.
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Cryptography basics
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Cryptography is the practice of disguising information in a way that looks random. This episode explores the history of cryptography and how it has evolved into the complex systems today.
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Password cracking demo
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Dan demonstrates how to use a password cracking tool to turn hashed passwords into cleartext.
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Cryptographic attacks
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In this episode, Mike explains how encrypted information is at risk and explores ways to protect it.
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Certificate types
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Mike reviews different types of certificates including Web, e-mail, code-signing, machine/computer, and user.
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SSH public key authentication lab
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Multifactor authentication should always be used for administrative accounts. In this demo, SSH public key authentication is configured for a Linux host.
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Trust models
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Web of trust is a mostly outdated method of proving identities; however, it is helpful to understand as the predecessor of public key infrastructure (PKI) which is widely used today.
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Hashing
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Hashes provide assurance of data integrity using fascinating mathematical calculations. Passwords are a very common use for hashing.
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Asymmetric cryptosystems
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In this episode, Mike describes encrypting and decrypting data with different keys and the magic that happens when key pairs are generated.
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Symmetric cryptosystems
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In this episode, Mike describes encrypting and decrypting data with the same key. He also covers how symmetric algorithms can either be block or streaming and use various types of ciphers depending on which one is used.
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Data protection
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Data are not all the same. Whether data are at rest, in use, or in transit will affect how you can best secure it.
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Security+ – Cryptography
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When using the Internet, users retrieve or share information. Depending on the application, purpose, and implementation methods, the need to provide data confidentiality, integrity, and authenticity emerges. To ensure these requirements are fulfilled and that only authorized parties have access to the data, the information transmitted over the Internet is obfuscated.
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Password cracking
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Passwords are often stored in hash format but can still be susceptible to attacks. The various password attacks include brute force, dictionary, and rainbow table. Salting and key stretching add another layer of security to hashed passwords.
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Touring certificates
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Mike tours various certificates in this episode.
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Ask me anything
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Digital cryptocurrencies provide a centralized public way to pay for goods and services. This video explains the relationship between cryptocurrency, public ledgers and the blockchain.
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Public Key Infrastructure
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In this episode, Mike discusses public key infrastructure (PKI), used to enable commerce and other secure activities over the Internet.
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Exam question review
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Protecting sensitive data can be done using many techniques. In this episode , the viewer is tested on the best security control for a given scenario.
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Understanding digital certificates
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Digital certificates are used in many different places to verify the identity of a public key owner. They can also include verification from third parties for an added layer of security.
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Diffie-Hellman
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Learn the Diffie-Hellman key exchange agreement and methods in this very complex algorithm.
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Syllabus
Syllabus
Course description


Meet the author
Mike Meyers, affectionately called the “Alpha Geek,” is the industry’s leading authority on CompTIA certifications. He is the president and co-founder of Total Seminars, LLC, a provider of PC and network repair seminars, books, videos and courseware for thousands of organizations throughout the world. Mike has been involved in the computer and network repair industry since 1987 as a technician, instructor, author, consultant and speaker. He has sold over a million IT and certification books, including the best-selling CompTIA A+ Certification All-in-One Exam Guide and CompTIA Network+ Certification All-in-One Exam Guide. He has personally taught thousands of students, including U.S. senators, U.S. Supreme Court Justices, members of the United Nation, every branch of the U.S. Armed Forces, many branches of the Department of Justice, hundreds of corporate clients and academic students at every level.

Meet the author
At Infosec, we believe knowledge is the most powerful tool in the fight against cybercrime. We help IT and security professionals advance their careers with a full regimen of certification and skills training. We also empower all employees with security awareness training to stay cybersecure at work and home. Driven by smart people wanting to do good, Infosec educates entire organizations on how to defend themselves from cybercrime. That’s what we do every day — equipping everyone with the latest security skills so the good guys win.
You're in good company
We use Infosec Skills to provide continuous training to our technicians and to prepare them for various certifications. Infosec Skills allows us to create personalized training programs that focus on each of our technicians’ particular roles and see their progress as they take courses. We also, recommend it to clients to make their IT support teams better.
Caleb Yankus
This has been utilized to bridge the skills gap across our cyber team and to aid them as they prepare for their various certifications. It also has provided a nice learning foundation for our various cyber team members to utilize as we continue to find ways for cross-utilization with operations while minimizing the downtime needed to ensure everyone’s knowledge is the same.
Daniel Simpson
We use Infosec Skills to provide base level knowledge for employees. We also use the services to provide in depth learning for employees as they encounter new technologies. If an employee is is assigned to a new project, we can rely on Infosec Skills to provide a rapid concentrated learning environment. This rapid concentrated learning positions our employees for success.
Infosec Skills Teams client
Plans & pricing
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Infosec Skills Personal
- 190+ role-guided learning paths (e.g., Ethical Hacking, Threat Hunting)
- 100s of hands-on labs in cloud-hosted cyber ranges
- Custom certification practice exams (e.g., CISSP, Security+)
- Skill assessments
- Infosec peer community support
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Infosec Skills Teams
- Team administration and reporting
- Dedicated client success manager
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Single sign-on (SSO)
Easily authenticate and manage your learners by connecting to any identity provider that supports the SAML 2.0 standard.
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Integrations via API
Retrieve training performance and engagement metrics and integrate learner data into your existing LMS or HRS.
- 190+ role-guided learning paths and assessments (e.g., Incident Response)
- 100s of hands-on labs in cloud-hosted cyber ranges
- Create and assign custom learning paths
- Custom certification practice exams (e.g., CISSP, CISA)
- Optional upgrade: Guarantee team certification with live boot camps
Unlock 7 days of free training
- 1,400+ hands-on courses and labs
- Certification practice exams
- Skill assessments
Award-winning training that you can trust




