MSN - Grindr has issued warnings about a rise in violence against users of the app globally. Perpetrators are increasingly using Grindr to target victims, as seen in a recent deadly attack in Brussels. Since June, there has been a notable increase in reports of violence or theft following Grindr dates. Grindr is using pop-up alerts to caution users, particularly in Brussels, where violent and homophobic ambushes have been reported. The app's anonymity and location-sharing features make it a target for criminals.