Petya is a common diminutive form of the name Pyotr, which is the Russian equivalent of Peter. It is often used affectionately in Russian-speaking cultures. The name has historical significance, as it has been borne by various notable figures, including Pyotr I, also known as Peter the Great, who was a prominent Russian czar. In modern contexts, "Petya" can also refer to a type of malware known as Petya ransomware. This malicious software encrypts files on infected computers and demands a ransom for their release. It gained notoriety in 2016 for its widespread impact on businesses and organizations around the world.