Researchers from AV-TEST.org published their findings in a test examining the security features of several fitness wristbands available for Android and iOS. In June 2015, the researchers reviewed nine different wristbands and found large variations in each products security model. Each of those devices didnt show any weaknesses and generally offered a high level of security. The same was true for the Apple Watch which because of some fundamental differences between iOS and Android was tested differently in some areas. None of the products showed major flaws in terms of of of secure internet communication.”]
Source: https://grahamcluley.com/fitness-trackers-falling-short-security-reveals-new-report/