I can provide you with some perspectives on the topic.
The idea that smallsats in low-Earth orbit (LEO) may be more accessible to attackers is not necessarily an unpopular opinion but rather a valid concern that has been discussed in the context of satellite security.
One argument is that the increasing accessibility and affordability of smallsats could lead to a larger number of satellites being deployed in LEO. This larger population of satellites may have varying degrees of security measures implemented, potentially creating a broader attack surface for malicious actors. Smallsats, often built by smaller organizations or even individuals, may have limited resources to invest in robust security measures, making them more vulnerable to attacks.
Furthermore, the relatively lower altitudes of LEO make it easier for potential attackers to physically access satellites. With smaller satellites orbiting closer to Earth, they are within the reach of ground-based technologies and could potentially be physically tampered with or disrupted by adversaries.
However, it's important to note that the space industry, including the smallsat community, recognizes the significance of satellite security. Efforts are being made to develop secure satellite architectures, encryption protocols, and monitoring systems to mitigate these risks. Regulatory bodies and industry standards are also evolving to ensure that security measures are prioritized during the design, development, and operation of satellites.
Ultimately, while the accessibility of smallsats in LEO may present security challenges, it is an ongoing concern that is being addressed through technological advancements, collaborations, and policy frameworks to enhance the security of satellite systems.