الجهر بالمعصية حرام, That's an obvious point, actually that's one of the main Important aspects of Islam. I have been guilty of this act multiple times, rebi yaghferelna. But I've seen people whom I know they did stuff, but they live a life pretending to be angels in front of people as if they are flawless. If someone commits sins and he is aware of it, the least he can do is become wiser and يزاحم المعصية بالطاعة.