Characteristics of a Muslim Businessman

If someone tells others about doing sinful deeds that he never did, is that regarded as committing sin openly?

What is the remedy for someone who discloses his secrets to everyone and suffers harm as a result?

If someone cheats in the exam and Allah conceals his sin, does he have to tell anyone?

He buys goods when they are available and plentiful, and sells them when the prices rise. Is this hoarding or profiteering?

He promised to give his daughter in marriage to one man, then he gave her in marriage to someone else

Ruling on selling programs to monitor what children do on the computer

The one who repents from sin is like one who did not sin

Does he have the right to make an agreement with someone who is working in the company that he will tell him when prices are going to rise?

Envy (hasad) is a vile and base characteristic, and it does not change anything of the divine decree