Three researchers at the University of Michigan claim to have found a way to break encryption by lowering the voltage going to a CPU. The processor makes mistakes as explained by the BBC in “Web security attack ‘makes silicon chips more reliable'”

The implications of the research do not stop at security. It is also helping to produce error correction systems that spot when transistors fail and ensure that data is not corrupted as a result.

I would still classify that as security. Data integrity is within scope of a security assessment of the chip, as is data availability.