A majority of Allianz Life's 1.4 million US customers had their personal data stolen in cyber-attack. Here's what you need to know.

Official filings did not state how many people were affected, or what data was compromised, although in a statement to The Register, Allianz said the majority of its 1.4 million customers were impacted.

Hackers gained access to personal data on the majority of the 1.4 million customers of Allianz Life Insurance Company of North America, the company confirmed Saturday.