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WinRAR flaw lets hackers run programs when you open RAR archives
(www.bleepingcomputer.com)
This is a most excellent place for technology news and articles.
Even 7Zip now though is insecure and outdated. Use NanaZip if you’re on windows, it's a fork that is more secure and uses modern compression/encryption algorithms in addition to integrating better with current Windows APIs
https://github.com/M2Team/NanaZip