How long is a Borg good for?

I'm curious about the durability and lifespan of Borg technology. Specifically, when we talk about "a Borg," are we referring to a type of cybernetic enhancement or a full-fledged cyborg? If it's the latter, how long can one expect these advanced beings to function optimally? Are there any known wear-and-tear issues or common malfunctions that tend to arise over time? And if it's a cybernetic enhancement, how long does the technology typically last before needing to be replaced or upgraded? Understanding the longevity of Borgs is crucial for both practical and ethical considerations within the cryptocurrency and finance realm, especially given their potential implications on data security and decision-making processes.