Apple users are encouraged to install iOS v13 and Safari v13 security updates, which have just been released

https://support.apple.com/en-us/HT201222

https://www.us-cert.gov/ncas/current-activity/2019/09/25/apple-releases-security-updates

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review Appleā€™s security updates page and apply the necessary updates for the following products: iOS 13.1, iPadOS 13.1, Safari 13.0.1 & tvOS 13