If you ask me the best way is to take up online courses as it is timing saving there are various options available in the market to become a professional in cyber security. Choose wisely before enrolling in any course for better results. I will suggest you Intellipaat which is offering the best cyber security course in collaboration with EICT IIT Guwahati. This program is not less than offline training. There are many beneficial features available in this program some of them include flexible online batches, learn from highly reputed institutions like IIT Guwahati, industry standard projects and assignments, specialization certifications from IIT Guwahati along with Intellipaat, placement assistance, an exclusive job portal, a 24*7 available support team and what not many more in which most of them are not available in other institutions. The key objective of the training is to help you to clear interviews and certifications easily. Upon completion of training one can become a certified professional.