For an overview suitable for mangers and policy makers, the University of Maryland has a short course comprising six modules that has a time requirement of around 21 hours. Its blurb explains that it will help individuals or organizations better understand how to address their cybersecurity:

Cybersecurity for Everyone lays the groundwork to understand and explore the key issues facing policy makers attempting to manage the problem of cybersecurity, from its technical foundations to the domestic and international policy considerations surrounding governance, privacy, and risk management, to applications for achieving the goals of an enterprise, an institution, or a nation. 

Also from the University of Maryland there's a more technical and more practical curriculum. At Intermediate level, the 5-course Cybersecurity Specialization estimated to require 2 months at 10 hours per week and:

covers the fundamental concepts underlying the construction of secure systems, from the hardware to the software to the human-computer interface, with the use of cryptography to secure interactions. These concepts are illustrated with examples drawn from modern practice, and augmented with hands-on exercises involving relevant tools and techniques. Successful participants will develop a way of thinking that is security-oriented, better understanding how to think about adversaries and how to build systems that defend against them. 

This course has a Capstone in which students build a software system they intend to be secure, and then attempt to show that other students' projects are insecure, by finding flaws in them.

For a Beginner level alternative which doesn't have a Capstone project, New York University offers Introduction to Cyber Security Specialization,  a 4-course series that is also estimated to require 2 months at 10 hours per week. According to its blurb:

The learning outcome is simple: We hope learners will develop a lifelong passion and appreciation for cyber security, which we are certain will help in future endeavors. Students, developers, managers, engineers, and even private citizens will benefit from this learning experience. Special customized interviews with industry partners were included to help connect the cyber security concepts to live business experiences.

Also at beginner level Cybersecurity Attack and Defense Fundamentals Specialization comes from  EC-Council. It has the rather different focus of:

Learn Ethical Hacking, Network Defense & Forensics. Master foundational skills to pursue a cybersecurity career and help build and maintain a secure infrastructure.

It is estimated to take 5 months at 5 hours per week and has three courses, one on each of topics in its title.

Coursera also has beginner-level Specializations from CISCO and IBM that are intended to provide the foundational knowledge to get you a first job such as an entry-level cybersecurity operations analyst in a Security Operations Center (SOC):

• Cybersecurity Operations Fundamentals Specialization
  CISCO 3 months/2 hrs per week
  
  
• IT Fundamentals for Cybersecurity Specialization
  IBM 2 months/10 hrs per week

There are also two Specializations from IBSC2 that are designed to prepare you for certification to advance a career in IT with cybersecurity skills:

• Certified in Cybersecurity Specialization
  1 month/10 hrs per week
  
  

• (ISC)² Systems Security Certified Practitioner (SSCP)
  2 months/10 hrs per week