What counts as unsportsmanlike conduct in handball?

• The definition: "any verbal and non-verbal expressions that are not in conformity with the spirit of good sportsmanship".
• Four levels: progressive punishment, direct two minutes, disqualification and, most serious, disqualification with a written report.
• Progressive, from a warning: protests against decisions, harassing or shouting at an opponent, not respecting the three-metre distance at a throw, overreacting to mislead the referees.
• Also progressive: actively blocking a shot or pass with the foot or lower leg, and repeatedly entering the goal area for tactical reasons.
• Direct two minutes: loud protests with forceful gestures, and not making the ball available at once when a decision goes against the team in possession.
• Also two minutes: simulation with little or no contact, actively preventing a throw from being taken, and a court player stopping a shot at an empty goal while entering the goal area.
• Disqualification: throwing or hitting the ball away in a demonstrative way after a decision, deliberately throwing the ball at an opponent during a stoppage and an act of revenge after being fouled.
• A goalkeeper's protest: demonstratively refusing to try to stop a 7-metre throw is a disqualification.
• With a report: insulting or threatening behaviour towards anyone, and a team official interfering in the game.
• Officials too: the rules apply to team officials in the substitution area.
• Before and after: conduct on the premises outside playing time can be punished as well.

The glossary has the unsportsmanlike conduct entry, the warning, the two-minute suspension, the disqualification, the responsible team official and the progressive punishment entry.

Fast restarts are central to handball, so the commonest way to cheat is to slow one down: stand on the ball, hold it, stand too close. The rules price each of those. The rest protects the referees, who control a crowded, physical game with only two pairs of eyes.