Final answer:
Perfect IT system security is unattainable due to the rapid evolution of cyber threats, intrinsic vulnerabilities in technology, and factors such as the digital divide and insufficient resources. It's a continuous challenge to mitigate these risks in the face of such complexity.
Step-by-step explanation:
Perfect IT system security cannot be achieved due to several complex factors. Firstly, there is an ever-present digital divide, which refers to the gap between those with access to modern information and communication technology and those without. This divide can affect the security preparedness of different sectors or regions. Secondly, the issue of inherent vulnerabilities in both software and hardware means that as new technology is developed, new weaknesses are often found, and it's a continuous race to patch these vulnerabilities before they can be exploited.
There are external factors to consider as well. The landscape of cyber threats is rapidly evolving, making it difficult for even the most secure systems to keep up. Additionally, guardians of IT security systems deal with challenges such as insufficient budget allocation, which can limit the resources available for security measures. Finally, highly skilled IT security personnel are in demand, and there is often a lack of adequately trained professionals to manage and secure these complex systems.
All these issues contribute to an environment where perfect security is not just impractical, but virtually impossible to attain, leading to the added risk of privacy loss, cybercrime, and potentially catastrophic system failures in critical infrastructure.