Dating apps and data leakage

What could be worse than having a dating app make it possible for everyone else to pinpoint your current location down to less than a meter?

Oh, have it be a dating app for a sexual orientation that is still illegal in many countries.

It appears that Grindr has had this vulnerability, and have been made aware of it, for more than 5 years.

Applications designed to locate Grindr users are publicly available online, and give anyone access to a virtual map on which you can travel from city to city, and from country to country, while seeing the exact location of cruising men that share their distance online. pic.twitter.com/0IumD6laAE

— Queer Europe 🏳️‍🌈 (@QueerEurope) September 13, 2018

(twitter)

I think GDPR might be a thing to consider here, as well.