“All That We Let In”: health apps’ APIs are vulnerable and easy to hack, exposing and altering PHI and PII

Mobile security company Approov has issued a scary report on the hackability of popular health apps. They tested 30 apps (not named in the report) of the 300,000-odd health apps in the market, and found that the application programming interfaces (APIs) used in 100 percent of these apps had hardcoded vulnerabilities that could allow hackers to access protected health information (PHI), personally identifiable information (PII), identity, and billing information. According to the report (registration required), these apps used by patient care organizations for remote account management and telemedicine appointments may expose 23 million individuals. Of the 30 apps tested:

• 77 percent contained hardcoded API keys, some of which do not expire
• Seven percent had hardcoded usernames and passwords in plain text
• 50 percent of the doors that these API vulnerabilities opened led to PHI and billing information
• 100 percent of the API endpoints tested were vulnerable to Broken Object Level Authorization (BOLA) attacks. These involve a relatively simple process of falsifying user IDs and swapping out numbers. For some apps, the hack could gain clinician-level access and alter medical histories and records (including issuing prescriptions for medication).
• 100 percent of the apps were vulnerable to man-in-the-middle attacks due to failure to implement certificate pinning, which forces the app to validate the server’s certificate against a known good copy

Alyssa Knight, the ‘recovering hacker’ who authored the report, also hacked into one hospital’s EHR and changed its values by one digit. She was then able to access health records and registration information. She used a hacking tool that looks like it is generating data from a mobile health app.

The use of mobile apps for telehealth and portals has become far more widespread as a result of the pandemic, yet security has lagged–even though the level of sophistication in the apps, and the amount of information they integrate, has accelerated to become the norm. It’s a wakeup call to developers, health systems, and digital health companies that off the shelf and old APIs don’t meet security demands. Unfortunately, Gartner projects that APIs will become the vector for most data breaches by 2022. CPO Magazine, FierceHealthcare