French hacker says Koo app leaks user data, company denies Updated: Updated: February 12, 2021 16:47 IST Alderson’s research shows that Koo user’s personal data like email id, date of birth, name, marital status and gender are visible to other even if they chose to keep it private. Share Article French hacker says Koo app leaks user data, company denies. | Photo Credit: Reuters Alderson’s research shows that Koo user’s personal data like email id, date of birth, name, marital status and gender are visible to other even if they chose to keep it private. (Subscribe to our Today's Cache newsletter for a quick snapshot of top 5 tech stories. Click here to subscribe for free.)