Conservationists tag wild animals with GPS to help research animal behavior and migration patterns, but now poachers and hunters are hacking the signals to hunt down endangered animals, a new study says. The worst incident was when eight grey wolves were killed in Yellowstone National Park. Researchers are calling for manufacturers to work with them to make the systems more secure. Conservationists have stopped publishing details of endangered species'locations to stop attracting poachers.
展开▼