How to secure, protect, and completely lock down your Android phone PCWorld
Whether you just got a new Android phone or have had one for a while, it’s probably not as secure as it could be. Here’s how to lock it down.
Security researchers have achieved the first real-world collision attack against the SHA-1 hash function, producing two different PDF files with the same SHA-1 signature. This shows that the algorithm’s use for security-sensitive functions should be discontinued as soon as possible.
SHA-1 (Secure Hash Algorithm 1) dates back to 1995 and has been known to be vulnerable to theoretical attacks since 2005. The U.S. National Institute of Standards and Technology has banned the use of SHA-1 by U.S. federal agencies since 2010, and digital certificate authorities have not been allowed to issue SHA-1-signed certificates since Jan. 1, 2016, although some exemptions have been made.
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