Robocall-blocking apps promise to rid your life of spoofed and spam phone calls. But are they as trustworthy as they claim to be? From a report: One security researcher said many of these apps can violate your privacy as soon as they are opened. Dan Hastings, a senior security consultant cybersecurity firm NCC Group, analyzed some of the most popular robocall-blocking apps — including TrapCall, Truecaller, and Hiya — and found egregious privacy violations. […] Many of these apps, said Hastings, send user or device data to third-party data analytics companies — often to monetize your information — without your explicit consent, instead burying the details in their privacy policies. One app, TrapCall, sent users’ phone numbers to a third-party analytics firm, AppsFlyer, without telling users — either in the app nor in the privacy policy. He also found Truecaller and Hiya uploaded device data — device type, model and software version, among other things — before a user could accept their privacy policies.

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Source: Slashdot – Robocall Blocking Apps Caught Sending Your Private Data Without Permission