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What’s iCloudCKKS.exe (iCloud Keychain Sync)? Is it safe or a virus?

iCloudCKKS.exe is a background process associated with Apple's iCloud Keychain feature, which securely stores and synchronizes sensitive information like passwords, Wi-Fi credentials, and credit card details across Apple devices. This executable facilitates the secure transmission and synchronization of this encrypted data between devices via iCloud, ensuring that updated information is available seamlessly. It utilizes end-to-end encryption, meaning the data is encrypted on the device and can only be decrypted by devices connected to the same iCloud account. This process is essential for maintaining consistency and security of keychain data across multiple devices linked to the user's Apple ID.

Researched by Laura @ SpyShelter Labs

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More about iCloudCKKS.exe on WINDOWS

Who makes iCloudCKKS.exe (iCloud Keychain Sync)?

We’ve found Apple Inc. should be the publisher of iCloudCKKS.exe.

How do we know? Our SpyShelter cybersecurity labs focuses on monitoring different types of Windows PC executables and their behaviors for our popular SpyShelter Antispyware software. Learn more about us, and how our cybersecurity team studies Windows PC executables/processes.

What does it mean if someone is the publisher of a PC .exe (executable or process)?

The publisher of an executable is the entity responsible for its distribution and authenticity. Most processes/executables on your PC should be signed. The signature on the executable should have been verified through a third party whose job it is to make sure the entity is who it says it is. Find an unsigned executable? You should consider scanning any completely unsigned .exe on your PC.

Last updated: March 12, 2025

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Why should you trust us?

Our team at SpyShelter has been studying Windows PC executables for over 15 years, to help fight against spyware, malware, and other threats. SpyShelter has been featured in publications like The Register, PC Magazine, and many others. Now we’re working to share free, actionable, and easy to understand information about Windows executables (processes) with the world, to help as many people as possible keep their devices safe. Learn more about us on our "About SpyShelter” page.

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