Today we launched Malloc : Malloc VPN: Privacy & Security. What else do you use, what do you look in a privacy and data security app?

Recently, the Bangladesh government has put some restrictions on the use of Facebook and messenger. In that situation, all most every Bangladeshi user uses many free VPN apps to smooth facebook and messenger uses. Because almost every e-commerce page reached in zero sales during that time. But my query is, how do you find VPN safe? Need your opinion.