In a world that is woven seamlessly with digital threads, cybersecurity has risen from a mere subcategory to a prominent domain in IT. The digital frontier is expansive, nebulous, and demands constant vigilance for its protection. This article aims to explore the intricate mechanisms of cybersecurity and emphasizes its importance in today's high-tech era.

Firstly, we need to understand the digital landscape. The digital frontier is multidimensional, spanning across fields as diverse as banking, education, healthcare, government services, and e-commerce. Each sector has unique digital security requirements and thus contributes exceptionally to the complex fabric of cybersecurity.

The foundational pillar of cybersecurity lies in encryption - the process of converting information into an uninterpretable format that can only be decoded with a decryption key. Modern encryption methods, such as the Advanced Encryption Standard (AES), provide reliable protection against most unauthorized access.

However, intruders advance with technology, devising increasingly clever methods of breaching security. Artificial Intelligence and Machine Learning have lately played pivotal roles in cybersecurity. These technologies help detect patterns in breaches and predict potential threats by learning from past cyber-attack instances. The cybersecurity tool called 'Darktrace' is an apt example of the use of AI in threat anticipation and detection.

To keep pace with the rapid advancements in threat mechanisms, the new practice of information sharing and threat intelligence has emerged. Exemplified by platforms such as CrowdStrike, it enables organizations to share data on cyber threats. By doing so, they collectively enhance their defensive measures and stay a step ahead of potential threats.

But, the question arises - Is technology enough for complete cybersecurity protection? A vital but often overlooked element in cybersecurity is human behavior. Even with the most robust systems, a single unaware user tapping on a rogue link can spell catastrophe. Hence, effective cybersecurity training is as imperative as the technology itself.

As we explore further into the extensive cybersecurity realm, we come across ethical hacking, also known as penetration testing or white-hat hacking. Here, skilled professionals probe systems for vulnerabilities that can be exploited by hackers. They serve as a preemptive strike, identifying weaknesses and enhancing system security before a potential breach occurs.

Lastly, enforcing strict security protocols and regularly updating software can also help fortify digital barriers. Cybersecurity is a dynamic, unending process that involves constant learning and evolution. It requires the delicate balance of progressive technological implementations coupled with disciplined human behavior.

In conclusion, protecting the digital frontier is a complex yet fascinating task, revolving around a blend of sophisticated technology, robust strategies and human vigilance. As threats evolve, so will the field of cybersecurity, creating a constant tussle between those trying to breach and those safeguarding our digital domains. Unraveling the intricacies of cybersecurity not only helps us understand and appreciate its importance but also equips us to participate meaningfully in protecting our digital fortresses.