Bitdefender is a Romanian cybersecurity and anti-virus software company. It was founded in 2001 by Florin Talpeş who is currently the CEO. Bitdefender develops and sells anti-virus software, internet security software, endpoint security software, and other cybersecurity products and services. As of 2017, the software has about 500 million users worldwide. As of August 2017, Bitdefender ranks ninth in the global ranking of Windows anti-malware application vendors. Source: https://en.wikipedia.org/wiki/Bitdefender

Fortinet is an American multinational corporation founded in 2000. The main office is located in Sunnyvale (California, USA). The company specializes in the development and promotion of software, solutions and services in the field of information security. Among the most requested solutions are next generation firewalls (NGFW), antivirus software, intrusion prevention and endpoint security systems, and a number of other products. In terms of revenue, Fortinet has consistently ranked in the top five of all network security companies. In 2020, the company's turnover exceeded $ 3 billion, and the number of customers exceeded half a million. By the beginning of 2021, the company had more than 700 patents in the field of information security, and about 200 more patents were pending. Fortinet employed about 8,300 people as of early 2021. FortiGate's flagship enterprise firewall platform supports a wide range of next-generation security and networking features. It comes in a variety of sizes and form factors, making it easily adaptable to any environment. Fortinet's proprietary Security Fabric integrates and automates the entire infrastructure, delivering unmatched security and visibility to every network segment and device, be it a virtual machine or physical device, in the cloud or on-premises. The company also runs the NSE training and certification program and operates the Network Security Academy, which supports universities offering information security courses.

Kaspersky is the world’s largest privately held vendor of endpoint cybersecurity solutions. We save the world! The company is ranked among the world’s top four vendors of security solutions for endpoint users. Throughout its more than 20-year history Kaspersky has remained an innovator in IT security and provides effective digital security solutions for large enterprises, SMBs and consumers. Kaspersky, with its holding company registered in the United Kingdom, currently operates in almost 200 countries and territories across the globe, providing protection for over 400 million users worldwide.

KnowBe4 is the world’s largest security awareness training and simulated phishing platform that helps you manage the ongoing problem of social engineering. Platform is user-friendly and intuitive. It was built to scale for busy IT pros that have 16 other fires to put out. Companys goal was to design the most powerful, yet easy-to-use platform available. Customers with businesses of all sizes can get the KnowBe4 platform deployed into production at least twice as fast as our competitors. KnowBe4 Customer Success team gets you going in no time, without the need for consulting hours.
Source: https://www.linkedin.com/company/knowbe4/about/

Microsoft Corporation is an multinational technology company headquartered in Redmond, Washington, that develops, manufactures, licenses, supports and sells computer software, consumer electronics and personal computers and services. Its best known software products are the Microsoft Windows line of operating systems, Microsoft Office office suite, and Internet Explorer and Edge web browsers. Its flagship hardware products are the Xbox video game consoles and the Microsoft Surface tablet lineup. As of 2011, it was the world's largest software maker by revenue, and one of the world's most valuable companies.