Some people who used Pangu Team’s jailbreak for iOS 9.3.3 informed that their debit card, social platform and PayPal data was stolen.
It’s probably problem with only one source of download: 25PP which forced PPHelper as download assistant. Pangu Team in mere moments announced that they will help in finding persones responsible for this incident.
If you used this jailbreak change passwords and if you just think about jailbreaking iPhone use only safe sources like creators site.

Source: GSM Maniak (polish)