Stabbed the sacred Apis bull and killed priests at an Egyptian festival
Buildings and Administration:
Restored the Temple of Neith to show respect - source could be biased
Treatment of subjects:
Naïve to culture
Impulsive
Lack of knowledge when it came to religion
Egypt - Motives
Eliminate threat
Show skill and power
Win wealth and land
Egypt - What Persia gained
Ports gave the Persians access to trade routes of the Mediterranean
Phoenicians were skilled sailors with a significant navy
Death:
Cambyses had previously killed his brother after dreaming he would overthrow him. Patizeithes and Smerdis ( Cambyses' brother look alike) decide to take control of the empire, as they could pretend Smerdis had authority.
On his way back from Egypt to sort this mess out, Cambyses' sword stabbed him as he mounted his horse.