The rape of Cassandra

Arctinus of Miletus: The Sack of Ilium
The story of Ajax and Cassandra has its origin in the lost epic in two books, The Sack of Ilium, by Arctinus of Miletus (fl. c. 776 BC). The analysis of The Sack of Ilium by Proclus states:

'Aias the son of Ileus, while trying to drag Cassandra away by force, tears away with her the image of Athene. At this the Greeks are so enraged that they determine to stone Aias, who only escapes from the danger threatening him by taking refuge at the altar of Athene.'

Athene's rage at the Greek's descration of her image caused her to make plans to destroy them all on the high seas.
The story was developed by succeeding generations of narrators until Ajax's crime became full rape.