How and why did you fall into slavery in Greece?

The sources from which Ancient Greece received slaves did not differ from the sources of other states with a similar system of that time. In the course of a military conflict, the victorious side took away part of the population of the losing state, which became slaves. Also, the citizens of Greece itself could fall into slavery if they did not have the means to pay the debt on the IOU. Markets where slaves were bought and sold as a commodity. Sea robbery, during which everyone who was on the ship fell into slavery. If a foreigner deceived himself with the rights of a citizen of Greece, he also fell into slavery.