Which Internet security risk is associated with dumpster diving? Identity theft. Identity theft is associated with dumpster diving because it involves taking something from someone else. In this case, instead of looking through a dumpster to get items that were someone elses, they are taking their identity and using it for their own purposes. So identity theft and dumpster diving relate when used in this context.
Too much use, air vents are being covered, dust/dirt/other particles clogging the fan making it struggle too cool the laptop down, the internal battery may be low and struggling to function, etc.
I hope this helps you!