The GNU Privacy Guard (GnuPG) is a complete and free implementation of the OpenPGP standard which is commonly abbreviated as PGP.
Yahoo has open-sourced Gryffin, a scanning platform for web applications.
Malware peddlers don't always have to steal or buy (from sellers on underground forums) legitimate and valid code-signing certificates to sign their malware with - sometimes the certificates can be found just "laying around" in open source software and code repositories.
Since Monday, security pros can add another XSS-finding tool to their arsenal, as Netflix has open sourced their cross-site scripting payload management framework dubbed "Sleepy Puppy." Sleepy Puppy is meant to address the biggest problem with identifying omnipresent XSS issues: finding them not only on targeted applications, but also on others that are not available to the tester, but whose presence ultimately also endangers users.
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