Billionaire Elon Musk's brain-computer interface (BCI) company Neuralink made headlines earlier this year for inserting its first brain implant into a human being. Such implants ... are described as "fully implantable, cosmetically invisible, and designed to let you control a computer or mobile device anywhere you go." They can help people regain abilities lost due to aging, ailments, accidents or injuries, thus improving quality of life. Yet, great ethical concerns arise with such advancements, and the tech is already being used for questionable purposes. Some Chinese employers have started using "emotional surveillance technology" to monitor workers' brainwaves. Governments and militaries are already ... describing the human body and brain as war's next domain. On this new "battlefield," an era of neuroweapons ... has begun. The Pentagon's research arm DARPA directly or indirectly funds about half of invasive neural interface technology companies in the US. DARPA has initiated at least 40 neurotechnology-related programs over the past 24 years. As a 2024 RAND report speculates, if BCI technologies are hacked or compromised, "a malicious adversary could potentially inject fear, confusion, or anger into [a BCI] commander's brain and cause them to make decisions that result in serious harm." Academic Nicholas Evans speculates, further, that neuroimplants could "control an individual's mental functions," perhaps to manipulate memories, emotions, or even to torture the wearer. In a [military research paper] on neurowarfare: "Microbiologists have recently discovered mind-controlling parasites that can manipulate the behavior of their hosts according to their needs by switching genes on or off. Since human behavior is at least partially influenced by their genetics, nonlethal behavior modifying genetic bioweapons that spread through a highly contagious virus could thus be, in principle, possible.