Covid-19 tests at home may not be trusted as you would expect – not in the hands of a committed hacker, at least. When Verge Notes, F-Secure Ken Gannon researcher found a security defect patched in the Ellume Swab test that was connected with Bluetooth which allowed it to change the results reported. Its susceptibility is complicated, but still confusing.

Gannon uses the Android device that is rooted to check the traffic Bluetooth Ellume Lateral Flow Tester sent to the company’s mobile application. The researcher referred to the traffic used to show test results, and write scripts to change the results. F-Secure Marketing Manager Alexandra Rinehimer even managed to deceive Azova, a company that issued a certificate for the US entrance test, when overseeing the test.

Ellume has made it more difficult to learn and modify data, and it’s unclear iPhone or iPad can replicate the same achievement. The company also built a portal to help officials verify tests at home, and have determined that all previous authentic tests.

Even so, these findings raise concerns about people who use other defects (including for other tests) to falsify their Covid-19 results. Someone with sufficient knowledge can reverse the negative results to re-enter the US or a certain workplace when infected. Although the efforts that are currently involved in making frauds it is not possible on a large scale, it will not require a lot of false results to lead to the plague.