Secure deletion of data.

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File shredders and free space wipers, are really safe to use?

I was wondering these days about , how really secure are the file shredding software , or free space wipers? Lets say we are using PC Windows, and software CCleaner (from piriform) or File Shredder ...
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Method for securely removing files from a solid state drive

I've thought of a method for securely erasing single files on a solid state drive. This method will work only if the drive is encrypted, and it will work even if someone cracks the encryption key for ...
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What is the security value of chattr +s?

Most modern Linux file systems support extended attributes. +s is secure deletion which ensures (at least intends) that the data in a file is overwritten with zeros when the file is deleted. Some ...
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Should universal delete, or “the right to be forgotten”, be an extension to OpenID Connect “signout” or authentication in general?

There are different levels of maturity various OpenID connect implementations may have. One of the optional features is the session management and sign out feature. Now that this has finally ...